2024/12/21 更新

写真a

ヨネオカ ユウイチロウ
米岡 有一郎
YONEOKA Yuichiro
所属
医歯学総合病院 魚沼地域医療教育センター 特任教授
職名
特任教授
▶ researchmapのプロフィールを表示
外部リンク

学位

  • 医学博士 ( 1999年9月   新潟大学 )

研究キーワード

  • 頭部外傷

  • 神経内分泌

  • 視床下部下垂体腫瘍・疾患

  • 低侵襲手術

  • 脳機能解析

  • 脳血管障害

  • neurosurgery

  • brain function analysis

研究分野

  • ライフサイエンス / 脳神経外科学

経歴

  • 新潟大学   医歯学総合病院 魚沼地域医療教育センター   特任教授

    2016年4月 - 現在

  • 新潟大学   医歯学総合病院   助教

    2006年12月 - 2016年3月

  • 新潟大学   医歯学総合研究科 医科学専攻   助教

    2006年12月 - 2016年3月

  • 新潟大学   医歯学総合研究科 分子細胞医学専攻   助教

    2006年12月 - 2016年3月

  • 新潟大学   脳研究所 統合脳機能研究センター 臨床機能脳神経学   助手

    2003年5月 - 2005年3月

学歴

  • 新潟大学   医学研究科 外科系専攻   脳神経外科学

    1995年4月 - 1999年9月

      詳細を見る

  • 新潟大学   Graduate School, Division of Medicine

    - 1999年

      詳細を見る

  • 金沢大学   医学部   医学科

    - 1993年

      詳細を見る

    国名: 日本国

    researchmap

  • 金沢大学   Faculty of Medicine

    - 1993年

      詳細を見る

所属学協会

▶ 全件表示

取得資格

  • 医師

 

論文

  • ACTH産生PitNETの集学的治療戦略と成績

    岡田 正康, 平石 哲也, 米岡 有一郎, 石黒 創, 北澤 勝, 曽根 博仁, 大石 誠

    日本内分泌学会雑誌   99 ( 4 )   896 - 896   2024年1月

     詳細を見る

    記述言語:日本語   出版者・発行元:(一社)日本内分泌学会  

    researchmap

  • 嚢胞形成PRL産生PitNETの治療成績

    岡田 正康, 小倉 良介, 平石 哲也, 米岡 有一郎, 大石 誠

    新潟医学会雑誌   137 ( 12 )   447 - 447   2023年12月

     詳細を見る

    記述言語:日本語   出版者・発行元:新潟医学会  

    researchmap

  • Hypoglycemic Hemiplegia Associated with Reversible Narrowing of the Contralateral Middle Cerebral Artery in a Patient with Adrenal Insufficiency.

    Yuhki Sakurai, Nobumasa Ohara, Yumi Fukai, Yasuhiro Seki, Katsuhiko Akiyama, Yuichiro Yoneoka, Toshinori Takada, Takashi Tani, Kenshi Terajima, Tetsutaro Ozawa, Hirohito Sone

    Internal medicine (Tokyo, Japan)   62 ( 5 )   751 - 756   2023年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    A 56-year-old man with a 2.5-month history of anorexia developed sweating, weakness, and left hemiplegia and hemispatial neglect. Brain magnetic resonance imaging detected no abnormalities, but magnetic resonance angiography revealed narrowing of the right middle cerebral artery (MCA). The focal neurological signs and narrowing of the MCA resolved after detection and correction of hypoglycemia. Endocrinological examinations indicated adrenal insufficiency. Hemiplegia is a rare but important neurological manifestation of hypoglycemia, although the mechanisms involved remain unknown. Combined hypoglycemia and decreased MCA blood flow associated with vasospasm probably induced regionally severe neuroglycopenia with ischemia, which presented as focal neurological symptoms.

    DOI: 10.2169/internalmedicine.0038-22

    PubMed

    researchmap

  • 頸部リンパ節転移で"下垂体がん"の診断に至った症例

    岡田 正康, 棗田 学, 大石 誠, 米岡 有一郎, 藤井 幸彦

    新潟医学会雑誌   137 ( 2 )   71 - 71   2023年2月

     詳細を見る

    記述言語:日本語   出版者・発行元:新潟医学会  

    researchmap

  • 成長ホルモン産生下垂体腺腫に対する発現受容体分類に基づく治療の可能性

    岡田 正康, 米岡 有一郎, 大石 誠, 石黒 創, 山本 正彦, 大澤 妙子, 伊藤 崇子, 曽根 博仁, 藤井 幸彦

    新潟医学会雑誌   136 ( 9 )   302 - 302   2022年9月

     詳細を見る

    記述言語:日本語   出版者・発行元:新潟医学会  

    researchmap

  • 統合失調症様の症状経過を呈し精神科に医療保護入院した脳動脈瘤破裂によるくも膜下出血の一症例

    坂上 仁, 湯川 尊行, 米岡 有一郎, 岡田 正康, 坪谷 隆介, 恩田 啓伍, 秋山 克彦, 関 泰弘

    新潟医学会雑誌   136 ( 6 )   206 - 207   2022年6月

     詳細を見る

    記述言語:日本語   出版者・発行元:新潟医学会  

    researchmap

  • Central diabetes insipidus after syndrome of inappropriate antidiuretic hormone secretion with severe hyponatremia in a patient with Rathke's cleft cyst.

    Yudai Hinata, Nobumasa Ohara, Takeshi Komatsu, Yuki Sakurai, Yuichiro Yoneoka, Yasuhiro Seki, Katsuhiko Akiyama, Hirohito Sone

    Internal medicine (Tokyo, Japan)   61 ( 2 )   197 - 203   2021年7月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    A 49-year-old man developed severe hyponatremia associated with transient headache and was diagnosed with syndrome of inappropriate antidiuretic hormone secretion (SIADH). Fluid restriction and sodium supplementation corrected the hyponatremia. However, several days later, the patient exhibited hypernatremia with thirst and polyuria. A detailed examination indicated central diabetes insipidus (CDI) with an intrasellar cystic lesion indicative of Rathke's cleft cyst (RCC). A case of RCC exhibiting headache, hyponatremia, and subsequent hypernatremia has been reported. Our case shows that CDI may appear after SIADH in patients with RCC, especially in those with serum sodium levels that unexpectedly increase rapidly beyond the reference range.

    DOI: 10.2169/internalmedicine.6608-20

    PubMed

    researchmap

  • GH産生下垂体腺腫に対するソマトスタチンアナログの効果とソマトスタチン受容体発現分類の検討

    岡田 正康, 米岡 有一郎, 大石 誠, 平石 哲也, 佐野 正和, 棗田 学, 柿田 明美, 藤井 幸彦

    Brain Tumor Pathology   38 ( Suppl. )   094 - 094   2021年5月

     詳細を見る

    記述言語:日本語   出版者・発行元:日本脳腫瘍病理学会  

    researchmap

  • 【脳神経画像Critical Findings-おさえておきたい症状とCT/MRI画像所見】おさえておきたいCT/MRI所見からの鑑別 下垂体の腫大

    米岡 有一郎, 岡田 正康

    Neurological Surgery   49 ( 2 )   301 - 315   2021年3月

     詳細を見る

    記述言語:日本語   出版者・発行元:(株)医学書院  

    <文献概要>Point ・生理的な下垂体腫大が存在し,正確な診断は無用な医療を防ぐ.・Incidentalomaはasymptomaticとは限らず,治療介入の要否を判断しなければならない.・Endocrinological emergencyが存在し,遅滞なく診断し治療介入すべき病態を理解すべきである.

    researchmap

    その他リンク: https://search.jamas.or.jp/default/link?pub_year=2021&ichushi_jid=J01228&link_issn=&doc_id=20210406190014&doc_link_id=10.11477%2Fmf.1436204392&url=https%3A%2F%2Fdoi.org%2F10.11477%2Fmf.1436204392&type=%E5%8C%BB%E6%9B%B8.jp_%E3%82%AA%E3%83%BC%E3%83%AB%E3%82%A2%E3%82%AF%E3%82%BB%E3%82%B9&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00024_2.gif

  • [Pituitary Hypertrophy].

    Yuichiro Yoneoka, Masayasu Okada

    No shinkei geka. Neurological surgery   49 ( 2 )   301 - 315   2021年3月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    Pituitary adenomas are the most common cause of sellar masses although there are a number of other neoplastic, infectious, inflammatory, developmental, and vascular etiologies that should be considered. Pregnancy promotes a physiological increase in the size of the maternal pituitary gland, especially adenohypophysis. The normal maturation sequence of the pituitary gland apparently involves a period of physiological hypertrophy in teenagers. As most incidentalomas in pediatric patients are not associated with hormonal hypersecretion or hypopituitarism, and structural progression is not common, it is hypothesized that the extensive follow-up assessment recommended for adults might not be necessary for children. Patients presenting with a pituitary lesion should undergo a complete history and physical examination that includes evaluations for evidence of hypopituitarism and hormone hypersecretion syndrome. Patients with evidence for either of these conditions should undergo an appropriately directed biochemical evaluation. All patients presenting with a pituitary lesion abutting the optic nerves or chiasm on magnetic resonance imaging should undergo a formal visual field examination. Emergencies in pituitary disease can result from the failure of the pituitary gland to secrete one or more pituitary hormones or from neuro-ophthalmological symptoms due to the mass effect of an expanding hypothalamic-pituitary lesion. Early diagnosis and prompt treatment of endocrine emergencies are mandatory.

    DOI: 10.11477/mf.1436204392

    PubMed

    researchmap

  • 【脳神経画像Critical Findings-おさえておきたい症状とCT/MRI画像所見】おさえておきたいCT/MRI所見からの鑑別 下垂体の腫大

    米岡 有一郎, 岡田 正康

    Neurological Surgery   49 ( 2 )   301 - 315   2021年3月

     詳細を見る

    記述言語:日本語   出版者・発行元:(株)医学書院  

    <文献概要>Point ・生理的な下垂体腫大が存在し,正確な診断は無用な医療を防ぐ.・Incidentalomaはasymptomaticとは限らず,治療介入の要否を判断しなければならない.・Endocrinological emergencyが存在し,遅滞なく診断し治療介入すべき病態を理解すべきである.

    researchmap

    その他リンク: https://search.jamas.or.jp/index.php?module=Default&action=Link&pub_year=2021&ichushi_jid=J01228&link_issn=&doc_id=20210406190014&doc_link_id=10.11477%2Fmf.1436204392&url=https%3A%2F%2Fdoi.org%2F10.11477%2Fmf.1436204392&type=%88%E3%8F%91.jp_%83I%81%5B%83%8B%83A%83N%83Z%83X&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00024_2.gif

  • Glass Fragment Injury to the Craniocervical Junction with Interatlantooccipital Penetration to the Subarachnoid Space: Not-To-Be-Missed Important Aspects of Craniocervical Trauma Even in the Middle of the COVID-19 Pandemic: Case Report and Review of Literature

    Yuichiro Yoneoka, Katsuhiko Akiyama, Yasuhiro Seki

    World Neurosurgery   141   402 - 405   2020年9月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier Inc.  

    Background: Nonmissile penetrating injuries to the craniocervical junction caused by a glass fragment are rare, and a standard management strategy has not been established. Case Description: A 75-year-old Japanese man was brought into our emergency department after receiving a left retroauricular stab wound by broken glass fragments. After spinal immobilization, a computed tomography (CT) scan revealed glass fragments penetrating at the right craniocervical junction to the interatlantooccipital subarachnoid space. CT angiography showed that both vertebral arteries were not injured. Magnetic resonance imaging demonstrated that the glass fragments did not penetrate the cervical cord or medulla oblongata. These glass fragments were removed via a midline incision from the external occipital protuberance to the C7 and with laminectomy without suboccipital craniectomy. Five of the glass fragments were found and removed in total. The dural defect was patched with a free fascia autograft. His postoperative course was uneventful. Postoperative CT angiography showed that both vertebral arteries were intact and the glass fragments had been removed completely. Conclusions: CT graphical diagnosis is useful for the management of penetrating craniocervical junction trauma, and it should be considered in the evaluation of patients who have suffered craniocervical penetrating injury even in the absence of major wounds or bleeding. Spinal immobilization of patients with craniocervical penetrating injuries is crucial to avoid not only secondary neurologic damage but also secondary critical vascular damage. Incomplete or inadequate assessment of craniocervical stab wounds results in unexpected hazards that are preventable.

    DOI: 10.1016/j.wneu.2020.06.065

    Scopus

    PubMed

    researchmap

  • Traumatic Nonmissile Penetrating Transnasal Anterior Skull Base Fracture and Brain Injury with Cerebrospinal Fluid Leak: Intraoperative Leak Detection and an Effective Reconstruction Procedure for a Localized Skull Base Defect Especially After Coronavirus Disease 2019 Outbreak

    Yuichiro Yoneoka, Naotaka Aizawa, Yoriko Nonomura, Manabu Ogi, Yasuhiro Seki, Katsuhiko Akiyama

    World Neurosurgery   140   166 - 172   2020年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier Inc.  

    Background: Cerebrospinal fluid (CSF) leakage after penetrating skull base injury is relatively rare compared with close head injuries involving skull base fractures. Case Description: We report the case of a 65-year-old man who had presented with epistaxis and serous rhinorrhea. When he had fallen to the ground near his bee boxes, a garden pole had poked into his right nostril. He had instantly removed the pole from his nostril himself. However, immediately after removal of the pole, he had developed nasal bleeding and serous rhinorrhea. He then drove to our emergency room. Computed tomography showed pneumocephalus with a minor cerebral contusion in the left frontal lobe and a penetrating injury in the left anterior skull base. His CSF leakage had not resolve spontaneously within 1 week after the injury with strict bed rest. We repaired the CSF leakage using a fat (adipose tissue)-on-fascia autograft plug and caulked the defect in the anterior skull base with the fat-on-fascia graft (FFG) plug through the left nostril with endoscopic guidance. The CSF rhinorrhea was successfully controlled. Intranasal local application of fluorescein aided in the detection of the direction of flow of the CSF leakage. Conclusions: Endonasal endoscopic caulking of a skull base defect using an FFG plug can be useful to treat CSF leakage due to the localized skull base defect, especially in the coronavirus disease 2019 pandemic. It is simple, inexpensive, and timesaving. It requires no special skills nor sophisticated instruments that can cause aerosolization, reducing the risk of infection during the surgery.

    DOI: 10.1016/j.wneu.2020.05.236

    Scopus

    PubMed

    researchmap

  • GHホルモンは頭蓋咽頭腫の増大に寄与したか? GH産生下垂体腺腫と頭蓋咽頭腫が併存した一例から

    岡田 正康, 米岡 有一郎, 棗田 学, 大石 誠, 柿田 明美, 藤井 幸彦

    Brain Tumor Pathology   37 ( Suppl. )   094 - 094   2020年8月

     詳細を見る

    記述言語:日本語   出版者・発行元:日本脳腫瘍病理学会  

    researchmap

  • Isolated Adrenocorticotropic Hormone Deficiency Presenting with Severe Hyponatremia and Rhabdomyolysis: A Case Report and Literature Review. 国際誌

    Takeshi Komatsu, Nobumasa Ohara, Naoko Hirota, Yuichiro Yoneoka, Takashi Tani, Keishi Terajima, Tetsutaro Ozawa, Hirohito Sone

    The American journal of case reports   20   1857 - 1863   2019年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    BACKGROUND Isolated adrenocorticotropic hormone deficiency (IAD) is a rare disorder characterized by central adrenal insufficiency (AI) but normal secretion of pituitary hormones other than adrenocorticotropic hormone. IAD usually presents with unspecific symptoms of AI, such as anorexia and fatigue, but some patients present with a variety of atypical manifestations. Rhabdomyolysis is a potentially life-threatening clinical syndrome caused by skeletal muscle injury with the release of muscle cell contents into the circulation. A wide variety of disorders can cause rhabdomyolysis. Herein, we report an unusual case of IAD presenting with hyponatremia and rhabdomyolysis. CASE REPORT A 67-year-old Japanese woman with a 2-month history of anorexia and fatigue was diagnosed with severe hyponatremia (serum sodium, 118 mEq/L) and rhabdomyolysis (serum creatine phosphokinase, 6968 IU/L), after 2 days of vomiting and muscle weakness. Physical and laboratory findings did not show dehydration or peripheral edema. Her rhabdomyolysis resolved with normalization of serum sodium levels during administration of sodium chloride. However, her anorexia and fatigue remained unresolved. After reducing the amount of sodium chloride administered, the patient still had hyponatremia. Detailed endocrinological examinations indicated IAD; her hyponatremia was associated with inappropriately high plasma arginine vasopressin levels. The patient received corticosteroid replacement therapy, which resolved her anorexia, fatigue, excessive arginine vasopressin, and hyponatremia. CONCLUSIONS This case highlights the importance of considering the possibility of central AI in patients with hyponatremia and excessive arginine vasopressin levels. In addition, rhabdomyolysis associated with hyponatremia can be an important manifestation of IAD.

    DOI: 10.12659/AJCR.918427

    PubMed

    researchmap

  • 局在診断に苦慮している周期性ACTH依存性クッシング症候群の1例

    金子 正儀, 佐藤 隆明, 福武 嶺一, 滝澤 祥子, 今西 明, 安楽 匠, 小松 健, 松林 泰弘, 岩永 みどり, 山田 貴穂, 藤原 和哉, 曽根 博仁, 岡田 正康, 小原 伸雅, 米岡 有一郎

    日本内分泌学会雑誌   95 ( 2 )   765 - 765   2019年10月

     詳細を見る

    記述言語:日本語   出版者・発行元:(一社)日本内分泌学会  

    researchmap

  • Isolated adrenocorticotropic hormone deficiency and thyroiditis associated with nivolumab therapy in a patient with advanced lung adenocarcinoma: a case report and review of the literature. 査読

    Ohara N, Kobayashi M, Ohashi K, Ito R, Ikeda Y, Kawaguchi G, Yoneoka Y, Hasegawa G, Takada T

    Journal of medical case reports   13 ( 1 )   88   2019年3月

  • A headache-free reversible cerebral vasoconstriction syndrome (RCVS) with symptomatic brain stem ischemia at late pregnancy as a rare manifestation of RCVS resolved with termination of pregnancy by semi-urgent cesarean section. 査読

    Kasuya C, Suzuki M, Koda Y, Sato H, Kashima K, Honda K, Kazama Y, Akiyama K, Seki Y, Yoneoka Y

    Oxford medical case reports   2018 ( 12 )   omy101   2018年12月

  • 治療に難渋しているACTH産生下垂体腺腫の1例

    岡田 正康, 米岡 有一郎, 温 城太郎, 本橋 邦夫, 菊池 文平, 長谷川 仁, 大石 誠, 藤井 幸彦

    新潟医学会雑誌   132 ( 11-12 )   399 - 400   2018年12月

  • A case of Reversible Non-parkinsonian Bradykinesia with Impaired Frontal Lobe Function as the Predominant Manifestation of Adrenal Insufficiency. 査読

    Ohara N, Hirokawa M, Kobayashi M, Ikeda Y, Yoneoka Y, Seki Y, Akiyama K, Tani T, Terajima K, Ozawa T

    Internal medicine (Tokyo, Japan)   2018年8月

  • Frontoethmoidal Schwannoma with Exertional Cerebrospinal Fluid Rhinorrhea: Case Report and Review of Literature 査読

    Yuichiro Yoneoka, Katsuhiko Akiyama, Yasuhiro Seki, Go Hasegawa, Akiyoshi Kakita

    World Neurosurgery   111   381 - 385   2018年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier Inc.  

    Background: Frontoethmoidal schwannomas are rare. No case manifesting exertional cerebrospinal fluid (CSF) rhinorrhea has ever been reported to the best of our knowledge. Case Description: In this report, we describe an extremely rare case of frontoethmoidal schwannoma extending through the olfactory groove with exertional CSF rhinorrhea as the initial symptom. A 50-year-old woman was presented to our clinic for frequent nasal discharge on exertion. A postcontrast computed tomographic scan demonstrated heterogeneously enhanced tumor from the anterior cranial fossa to the anterior ethmoid sinus. A gadolinium-enhanced T1-weighted magnetic resonance image revealed a well-defined heterogeneously enhanced tumor situated in the midline anterior cranial fossa and anterior ethmoid sinus. After the resection, the defect of the right anterior skull base was reconstructed with a fascia graft and adipose tissue taken from the abdomen, as well as a pedicle periosteum flap. A histologic examination revealed the tumor as schwannoma. Her rhinorrhea completely resolved. She regained her sense of smell and taste 1 month after the operation. Conclusion: According to previous reports, olfactory groove, and paraolfactory groove/periolfactory groove schwannomas can be divided into 4 types: subfrontal, nasoethmoidal, frontoethmoidal, and ethmofrontal. Among them, a frontoethmoidal schwannoma can manifest exertional CSF rhinorrhea as an initial symptom.

    DOI: 10.1016/j.wneu.2018.01.015

    Scopus

    PubMed

    researchmap

  • Has acromegaly been diagnosed earlier? 査読

    Ohno H, Yoneoka Y, Jinguji S, Watanabe N, Okada M, Fujii Y

    Journal of clinical neuroscience : official journal of the Neurosurgical Society of Australasia   48   138 - 142   2018年2月

  • Isolated adrenocorticotropin deficiency due to nivolumab-induced hypophysitis in a patient with advanced lung adenocarcinoma: A case report and literature review 査読

    Nobumasa Ohara, Kazumasa Ohashi, Toshiya Fujisaki, Chiyumi Oda, Yohei Ikeda, Yuichiro Yoneoka, Takehisa Hashimoto, Go Hasegawa, Kazuo Suzuki, Toshinori Takada

    Internal Medicine   57 ( 4 )   527 - 535   2018年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Society of Internal Medicine  

    A 63-year-old Japanese woman with advanced lung adenocarcinoma developed isolated adrenocorticotropin deficiency caused by immune checkpoint inhibitor (ICI)-related hypophysitis following 8 months of nivolumab therapy. Prompt corticosteroid replacement therapy effectively relieved her secondary adrenal insufficiency symptoms and allowed her to pursue nivolumab therapy, which had been effective for the control of lung adenocarcinoma. Human leukocyte antigen (HLA) typing revealed the presence of the DRB1*04:05-DQA1*03:03-DQB1*04:01 haplotype, which is associated with susceptibility to autoimmune polyglandular syndrome with pituitary disorder in the Japanese population. This case suggests that genetic factors, such as HLA, contribute to the development of endocrinopathies induced by ICIs.

    DOI: 10.2169/internalmedicine.9074-17

    Scopus

    PubMed

    researchmap

  • Ectopic pituitary null cell adenoma arising from the infundibulum in the third ventricle: A successful endonasal transsphenoidal resection after long-term follow-up MR imaging – A technical note 査読

    Yuichiro Yoneoka, Masayasu Okada, Naoto Watanabe, Satoru Aoki, Akiyoshi Kakita, Yukihiko Fujii

    Interdisciplinary Neurosurgery   10   122 - 125   2017年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier {BV}  

    DOI: 10.1016/j.inat.2017.08.004

    Scopus

    researchmap

  • Third Ventricle Germ Cell Tumor Originating from the Infundibulum with Rapidly Expansive Enlargement 査読

    Yuichiro Yoneoka, Junichi Yoshimura, Masakazu Sano, Masayasu Okada, Akiyoshi Kakita, Yukihiko Fujii

    Pediatric Neurosurgery   53 ( 1 )   49 - 54   2017年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:S. Karger AG  

    We present a pediatric case of a rapidly expanding third ventricle germ cell tumor (GCT). A 14-year-old boy suffered from gradual-onset central diabetes insipidus (DI) and received desmopressin treatment. Magnetic resonance imaging (MRI) showed nonspecific findings of the pituitary-hypothalamic axis. Nine months after the initial DI diagnosis, he developed progressively worsening headache. MRI demonstrated a third ventricle tumor causing noncommunicating hydrocephalus, although an MRI 16 weeks before admission did not show the lesion. We performed gross total resection (GTR) of the tumor in 2 stages: a translamina terminalis approach and an extended transsphenoidal approach. The lesion was histologically diagnosed as immature teratoma with some germinoma. His noncommunicating hydrocephalus resolved after surgery. Through postoperative radiochemotherapy (whole ventricle: 23.4 Gy/13 fractions, tumor bed: 27.0 Gy/15 fractions, and 3 courses of carboplatin-etoposide), he has was in complete remission at the 3-year follow-up and has continued his high school program. This case suggests the following: (1) a mixed GCT originating from the neurohypophysis/infundibulum can show rapidly expansive growth in a child with central DI
    (2) GTR and adjuvant radiochemotherapy can result in a good therapeutic outcome in rapidly expanding GCT
    and (3) the extended transsphenoidal approach is a complementary approach to transcranial resection of anterior third ventricle GCTs.

    DOI: 10.1159/000480021

    Scopus

    PubMed

    researchmap

  • Unruptured medial paraclinoid internal carotid artery aneurysm embedded within symptomatic nonfunctioning pituitary giant adenoma: A high-risk comorbid pathology in transsphenoidal surgery and its countermeasures 査読

    Taiki Saito, Yuichiro Yoneoka, Jun Watanabe, Bumpei Kikuchi, Hitoshi Hasegawa, Yukihiko Fujii

    Interdisciplinary Neurosurgery: Advanced Techniques and Case Management   10   138 - 141   2017年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier B.V.  

    Background Injury of the internal carotid artery (ICA) in the cavernous portion is one of the most critical complications of transsphenoidal surgery (TSS), especially in cases of coexistence with a pituitary adenoma (PA) and ICA aneurysm. Case description We present a rare case of unruptured medial paraclinoid ICA aneurysm (ICA-An) associated with symptomatic nonfunctioning giant PA. After endovascular coil embolization of the unruptured 4-mm saccular medial paraclinoid ICA-An, the patient underwent adenomectomy through an endoscopic endonasal TSS. During the bone resection over the right sellar floor near the right cavernous sinus, a tangle of packed coils in the treated medial paraclinoid ICA-An was observed immediately after a bite of a Kerrison rongeur. The dural layer over the coiled aneurysm had become thin to the point of transparency or complete absence. Careful inspection revealed that the bone hillock was formed by the medial paraclinoid ICA-An. Gross total resection of the adenoma was achieved without vascular injuries related to the coiled aneurysm despite postoperative transient right oculomotor paresis. Conclusions This case conveys three important lessons about TSS: 1) coil embolization will manage a medial paraclinoid ICA-An as a sufficient preoperative procedure for TSS
    2) a medial paraclinoid ICA-An can appear directly under the sellar floor as an apparent extradural aneurysm
    and
    3) surgeons should take great care in procedures near a coil-embolized medial paraclinoid ICA-An because the aneurysmal wall can be thin to the point of transparency.

    DOI: 10.1016/j.inat.2017.09.005

    Scopus

    researchmap

  • Acute hypopituitarism associated with periorbital swelling and cardiac dysfunction in a patient with pituitary tumor apoplexy: A case report 査読

    Nobumasa Ohara, Yuichiro Yoneoka, Yasuhiro Seki, Katsuhiko Akiyama, Masataka Arita, Kazumasa Ohashi, Kazuo Suzuki, Toshinori Takada

    Journal of Medical Case Reports   11 ( 1 )   235   2017年8月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:BioMed Central Ltd.  

    Background: Pituitary tumor apoplexy is a rare clinical syndrome caused by acute hemorrhage or infarction in a preexisting pituitary adenoma. It typically manifests as an acute episode of headache, visual disturbance, mental status changes, cranial nerve palsy, and endocrine pituitary dysfunction. However, not all patients present with classical symptoms, so it is pertinent to appreciate the clinical spectrum of pituitary tumor apoplexy presentation. We report an unusual case of a patient with pituitary tumor apoplexy who presented with periorbital edema associated with hypopituitarism. Case presentation: An 83-year-old Japanese man developed acute anterior hypopituitarism
    he showed anorexia, fatigue, lethargy, severe bilateral periorbital edema, and mild cardiac dysfunction in the absence of headache, visual disturbance, altered mental status, and cranial nerve palsy. Magnetic resonance imaging showed a 2.5-cm pituitary tumor containing a mixed pattern of solid and liquid components indicating pituitary tumor apoplexy due to hemorrhage in a preexisting pituitary adenoma. Replacement therapy with oral hydrocortisone and levothyroxine relieved his symptoms of central adrenal insufficiency, central hypothyroidism, periorbital edema, and cardiac dysfunction. Conclusions: Common causes of periorbital edema include infections, inflammation, trauma, allergy, kidney or cardiac dysfunction, and endocrine disorders such as primary hypothyroidism. In the present case, the patient's acute central hypothyroidism was probably involved in the development of both periorbital edema and cardiac dysfunction. The present case highlights the need for physicians to consider periorbital edema as an unusual predominant manifestation of pituitary tumor apoplexy.

    DOI: 10.1186/s13256-017-1371-7

    Scopus

    PubMed

    researchmap

  • Perifocal Inflammatory Reaction with Volume Fluctuation Caused by Diagnostic Radiation-Induced Regression in Germinoma Makes Histological Diagnosis Difficult despite Its Disappearance following Treatment: A Significant Pitfall and Countermeasures to It 査読

    Yuichiro Yoneoka, Junichi Yoshimura, Masayasu Okada, Yukihiko Fujii

    PEDIATRIC NEUROSURGERY   52 ( 2 )   87 - 92   2017年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:KARGER  

    We present a pediatric case of neurohypophyseal germinoma with a perifocal inflammatory reaction (PIR) with volume fluctuation caused by diagnostic radiation-induced regression (DRIR). On-target biopsy failed to confirm the histology because PIR hardly contained any germinoma cells. DRIR-related fluctuation of the tumor volume disguised germinoma as inflammation. We analyzed the cerebrospinal fluid (CSF) and detected a high level of placental alkaline phosphatase (PLAP), which demonstrated the neurohypophyseal lesion to be germinoma and brought the patient from successful radiochemotherapy up to complete remission. PIR adjacent to the germinoma (PIRAG) disappeared completely following radiochemotherapy, although it contained almost no germinoma cells. Examination of the CSF-PLAP level can complement the diagnosis of germinoma and will decrease the risk of misdiagnosis. Neurosurgeons should keep in mind PIRAG, DRIR, and the diagnostic value of CSF-PLAP when germinoma is suspected. (C) 2016 S. Karger AG, Basel

    DOI: 10.1159/000450583

    Web of Science

    PubMed

    researchmap

  • Fibromyalgia in a Patient with Cushing's Disease Accompanied by Central Hypothyroidism 査読

    Nobumasa Ohara, Shinichi Katada, Takaho Yamada, Naomi Mezaki, Hiroshi Suzuki, Akiko Suzuki, Osamu Hanyu, Yuichiro Yoneoka, Izumi Kawachi, Takayoshi Shimohata, Akiyoshi Kakita, Masatoyo Nishizawa, Hirohito Sone

    INTERNAL MEDICINE   55 ( 21 )   3185 - 3190   2016年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JAPAN SOC INTERNAL MEDICINE  

    A 39-year-old woman with a 3-year history of a rounded face developed widespread myalgia. Detailed examinations revealed no disorders that could explain the pain other than concomitant Cushing's disease and central hypothyroidism. Both the hypercortisolemia and hypothyroidism completely resolved after the patient underwent surgery to treat Cushing's disease, but she continued to experience unresolved myalgia and met the diagnostic criteria for fibromyalgia. Few studies have so far investigated patients with fibromyalgia associated with Cushing's syndrome. In our case, the hypothyroidism caused by Cushing's disease probably played an important role in triggering and exacerbating fibromyalgia. This highlights the need to examine the endocrine function in patients with muscle pain.

    DOI: 10.2169/internalmedicine.55.5926

    Web of Science

    PubMed

    researchmap

  • Long-term outcomes in patients with pineal nongerminomatous malignant germ cell tumors treated by radical resection during initial treatment combined with adjuvant therapy 査読

    Shinya Jinguji, Junichi Yoshimura, Kenichi Nishiyama, Yuichiro Yoneoka, Masakazu Sano, Masafumi Fukuda, Yukihiko Fujii

    ACTA NEUROCHIRURGICA   157 ( 12 )   2175 - 2183   2015年12月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER WIEN  

    For pineal nongerminomatous malignant germ cell tumors (NGMGCTs), we mainly performed radical tumor resection during initial treatment combined with adjuvant therapy.
    We retrospectively analyzed 17 patients treated for pineal NGMGCTs between 1986 and 2007 at the University of Niigata.
    Twelve patients underwent total or subtotal resection of their tumor via the occipital transtentorial approach. Five patients underwent partial resection, and four of them later underwent total resection by salvage surgery. After surgery, eight patients were treated with combined radiochemotherapy including whole-brain irradiation, two received radiation monotherapy, one had chemotherapy with local irradiation, and six were treated with chemotherapy alone. The median follow-up period for surviving patients was 179 months. The 10-year overall survival and progression-free survival rates for the radiochemotherapy group were both 75.0 % (two patients had a recurrence and died); the rates for other adjuvant therapies were 77.8 % (two died) and 22.2 % (seven had a recurrence), respectively. Radiochemotherapy was significantly associated with an increased rate of progression-free survival compared with the other adjuvant therapies (p = 0.0396).
    For pineal NGMGCTs, initial treatment strategies including gross total resection of the tumor before or after whole-brain irradiation and chemotherapy provided good therapeutic outcomes. Obtaining complete remission of the primary tumor, irrespective of the timing of surgical resection (i.e., before or after adjuvant therapies), or complete response by neoadjuvant radiochemotherapy during an initial treatment appears to be essential for improving therapeutic outcomes of intracranial NGMGCTs.

    DOI: 10.1007/s00701-015-2614-2

    Web of Science

    PubMed

    researchmap

  • 視路/視床下部神経膠腫の長期治療成績

    吉村 淳一, 藤原 秀元, 平石 哲也, 高尾 哲郎, 米岡 有一郎, 西山 健一, 福多 真史, 藤井 幸彦

    小児の脳神経   40 ( 1 )   89 - 89   2015年4月

     詳細を見る

    記述言語:日本語   出版者・発行元:(一社)日本小児神経外科学会  

    researchmap

  • Early morphological recovery of the optic chiasm is associated with excellent visual outcome in patients with compressive chiasmal syndrome caused by pituitary tumors 査読

    Yuichiro Yoneoka, Tetsuhisa Hatase, Naoto Watanabe, Shinya Jinguji, Masayasu Okada, Mineo Takagi, Yukihiko Fujii

    NEUROLOGICAL RESEARCH   37 ( 1 )   1 - 8   2015年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:MANEY PUBLISHING  

    Objectives: The study objectives are (1) to identify factors predicting the excellent visual recovery after transsphenoidal removal of pituitary tumors and (2) to describe the association of excellent visual recovery and early restoration of symmetry of the decompressed optic chiasm.
    Methods: Thirty-five patients with visual symptoms due to pituitary tumors underwent endoscopic endonasal surgery. All patients received perioperative diagnostic magnetic resonance (MR) imaging and ophthalmological assessments within 2 weeks before surgery, within 2 weeks after surgery, and 3 months or later after surgery. Preoperative best-corrected visual acuity (BCVA >= 20/20), degree of visual field deficit (VFD, less than half of VF), thickness of retinal nerve fiber layer (RNFL) measured by optical coherence tomography (OCT), and thickness of ganglion cell complex (GCC) measured by OCT were considered for statistical analysis as predictive factors of VF outcome. Multivariate logistic regression models were used in statistical evaluation of data.
    Results: In the multivariate analysis, RNFL (odds ratio = 62.137, P < 0.001) and preoperative VFD (odds ratio = 8.244, P < 0.02) proved to be effective as factors predicting sufficient VF recovery. Postoperative restoration of symmetry of the optic chiasm was related to sufficient VF recovery (P < 0.0001, Fisher's exact test) and RNFL (P < 0.0001, Fisher's exact test).
    Discussion: Early decompression is crucial for sufficient VF recovery, in particular, while RNFL preserves normal or borderline thickness and while VFD keeps within hemianopia. Morphological reversibility is associated with functional reversibility in the optic chiasm compressed by a pituitary tumor. In particular, early morphological recovery suggests functional recovery, which indicates neurocyte reserve in the compressed optic pathway with functional recovery.

    DOI: 10.1179/1743132814Y.0000000407

    Web of Science

    PubMed

    researchmap

  • Prediction of postoperative visual field size from preoperative optic chiasm shape in patients with pituitary adenoma 査読

    Ito S, Yoneoka Y, Hatase T, Fujii Y, Fukuchi T, Iijima A

    Advanced Biomedical Engineering   4   80 - 85   2015年

     詳細を見る

    記述言語:英語   出版者・発行元:Japanese Society for Medical and Biological Engineering  

    Pituitary tumors frequently compress the optic chiasm, causing visual field deficits. Surgical removal of these tumors could improve visual functions. Thus, predicting the prognosis of visual field function is required, but currently there is no method for predicting postoperative visual field status from preoperative data of tumor and optic chiasm characteristics. In this study, we performed preoperative evaluation of visual field prognosis using numerical parameters in 40 patients with pituitary tumors. Data from 30 patients were used to calculate the regression equation and those from the remaining 10 patients were used to confirm the validity of these equations. We defined quantitative values (area of tumor, <i>A<sub>tumor</sub></i>; curvature of chiasm, <i>C<sub>chiasm</sub></i>; and area of chiasm, <i>A<sub>chiasm</sub></i>) based on tumor size, tumor shape, and optic chiasm shape as determined using magnetic resonance imaging. We determined pre- and postoperative visual field sizes by ophthalmologic methods, and quantified them as numerical values (<i>TNR</i>). Postoperative recovery of the visual fields (obtained by comparing the post- and preoperative visual fields) was confirmed by increased postoperative <i>TNR</i>s (<i>P</i> < 0.01 for 4 isopters and <i>P</i> = 0.01 for 1 isopter, <i>t</i>-test). We attempted to predict postoperative visual field size using preoperative <i>A<sub>tumor</sub></i>, <i>C<sub>chiasm</sub></i>, and <i>A<sub>chiasm</sub></i>. Multiple regression analysis was performed, and three significant regression equations for predicting visual field size were obtained (N = 30, <i>P</i> < 0.01, <i>F</i>-test). The measured and predicted visual field sizes showed strong correlation (N = 10, <i>r</i> > 0.70). Thus, the quantitative parameters defined in this study clearly predicted postoperative visual functions in patients with pituitary tumor, and could find clinical applications in preoperative evaluation of visual field prognosis in neurosurgery.

    DOI: 10.14326/abe.4.80

    Web of Science

    CiNii Article

    researchmap

  • Technical note: Endoscopic resection of a dermoid cyst anchored to the anterior optic chiasm 査読

    Yuichiro Yoneoka, Naoto Watanabe, Mitsuo Kohno, Daisuke Satoh, Hitoshi Takahashi, Yukihiko Fujii

    Interdisciplinary Neurosurgery: Advanced Techniques and Case Management   1 ( 2 )   21 - 25   2014年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier  

    Introduction Supratentorial dermoid cysts arise due to the misplacement of embryonic inclusions in the vicinity of the developing neural tube up to the third week of life, when the neural groove begins to close. This report describes a case of a suprasellar dermoid cyst anchored to the anterior optic chiasm, which was accurately located by endoscopic observation, removed gross-totally without visual disturbance, and confirmed pathologically. Although the cyst wall was gross-totally resected, the patient's impaired visual field returned to a normal level. The resection procedure under endoscopic vision is demonstrated. Materials and Methods A 22-year-old man gradually developed bitemporal hemianopsia with retrobulbar pain over two months. Magnetic resonance imaging demonstrated a suprasellar cyst with intracystic fat contents forming a fluid level within the lesion. The suprasellar cyst was gross-totally removed with endoscopic endonasal transsphenoidal procedures. Intraoperative inspection confirmed that this cyst arose from the optic chiasm. Pathological examination showed the lesion as a dermoid cyst. Results After gross-totally resection of the cyst, the patient presented a further, transient impairment of bitemporal hemianopsia
    at four month follow-up, his visual disturbance was not evident any longer. Conclusion To the best of our knowledge, ours is the only case of a dermoid cyst anchored to the anterior optic chiasma, which was visually confirmed under endoscopic observation. After surgery, the patient presented a transient impairment of the visual field, which was not evident at four month follow-up. It will contribute to a similar case, in which surgeons hesitate to make an incision in the optic chiasm. A subtotal excision should be considered in cases of dermoid cysts anchored to the anterior optic chiasm, because all the previously reported cases of suprasellar dermoid cysts are young people or those who have a relatively long life expectancy. © 2014 The Authors.

    DOI: 10.1016/j.inat.2014.03.001

    Scopus

    researchmap

  • 当科における頭蓋内胚腫の治療成績および患者の機能予後に影響を与える因子の検討

    神宮字 伸哉, 吉村 淳一, 西山 健一, 長崎 啓祐, 米岡 有一郎, 福多 真史, 妻沼 到, 田村 哲郎, 藤井 幸彦

    日本内分泌学会雑誌   89 ( Suppl.HPT )   74 - 77   2013年8月

     詳細を見る

    記述言語:日本語   出版者・発行元:(一社)日本内分泌学会  

    頭蓋内胚腫(胚腫)の治療成績および患者の機能予後に影響を与える因子について検討した。初期治療を行った胚腫46例を後方視的に分析した。全例に手術を行い、全摘出3例、亜全摘出8例、部分摘出10例、生検術25例であった。永続的な手術合併症が4例で生じた。組織診断確定後、46例中38例に対し放射線単独治療を行い、7例に対し化学療法併用放射線治療を行い、1例に化学療法単独治療を行った。放射線単独治療を行った38例には再発を認めなかった。化学療法単独例と化学療法を併用した局所照射例で1例ずつ再発を認めたが、全脳以上に照射を行った症例では再発を認めなかった。4例が死亡し、いずれも腫瘍関連死ではあったが、死亡までに腫瘍の再発は認めなかった。5年、10年、15年生存率は、それぞれ100%、93.3%、88.2%で、5年、10年、15年無再発生存率は、それぞれ95.7%、89.3%、84.3%であった。

    researchmap

  • Observation of the neurohypophysis, pituitary stalk, and adenohypophysis during endoscopic pituitary surgery: demonstrative findings as clues to pituitary-conserving surgery. 査読

    Yoneoka Y, Watanabe N, Okada M, Fujii Y

    Acta neurochirurgica   155 ( 6 )   1049 - 1055   2013年6月

  • Factors affecting functional outcomes in long-term survivors of intracranial germinomas: a 20-year experience in a single institution. 査読 国際誌

    Jinguji S, Yoshimura J, Nishiyama K, Aoki H, Nagasaki K, Natsumeda M, Yoneoka Y, Fukuda M, Fujii Y

    Journal of neurosurgery. Pediatrics   11 ( 4 )   454 - 463   2013年4月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.3171/2012.12.PEDS12336

    PubMed

    researchmap

  • 長期にわたる画像追跡の末、急速増大をきたした松果体部胚細胞性腫瘍の1例

    神宮字 伸哉, 福多 真史, 西山 健一, 吉村 淳一, 米岡 有一郎, 長崎 啓祐, 藤井 幸彦

    小児の脳神経   38 ( 1 )   120 - 120   2013年4月

     詳細を見る

    記述言語:日本語   出版者・発行元:(一社)日本小児神経外科学会  

    researchmap

  • Occurrence of metachronous pure germinomas long after treatment of a mixed germ cell tumor containing yolk sac tumor and germinoma. 査読 国際誌

    Jinguji S, Okamoto K, Yoshimura J, Yoneoka Y, Ogura R, Saito A, Fujii Y

    Journal of neurosurgery. Pediatrics   11 ( 1 )   68 - 73   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.3171/2012.9.PEDS12151

    PubMed

    researchmap

  • Endoscopic biopsies of lesions associated with a thickened pituitary stalk 査読

    Shinya Jinguji, Kenichi Nishiyama, Junichi Yoshimura, Yuichiro Yoneoka, Atsuko Harada, Masakazu Sano, Yukihiko Fujii

    Acta Neurochirurgica   155 ( 1 )   119 - 124   2013年1月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Background: Lesions associated with a thickened pituitary stalk (TPS lesions) revealed by magnetic resonance imaging have a diverse pathology. Accordingly, for clinical decision-making, it is necessary to make a diagnosis based on histopathological examination of the TPS lesions. The objectives of this study were to review endoscopic biopsies of TPS lesions and to assess the surgical strategy for treating these lesions. Methods: Eleven patients (four males and seven females) aged from 6 to 75 years underwent endoscopic biopsy of a TPS lesion between 2006 and 2011 at University of Niigata. The relationships of the extent of lesions with surgical approaches were retrospectively examined. Results: Among the 11 patients, a biopsy was performed via an endoscopic transsphenoidal approach for five with intrasellar lesions
    via an endoscopic extended transsphenoidal approach for two with localized TPS lesions
    and via an endoscopic intraventricular approach for four with the lesion protruding from the infundibulum. Histopathological examinations of all the lesions confirmed diagnoses of germinoma in four patients, hypophysitis in three, Langerhans cell histiocytosis in two, craniopharyngioma in one, and cancer metastasis in one. None of the 11 patients had further deterioration of pituitary function postoperatively. Conclusions: Endoscopic biopsy of TPS lesions is a less invasive alternative to open biopsy requiring transcranial surgery. The endoscopic transsphenoidal approach is most suitable for biopsies of TPS lesions associated with intrasellar lesions. Otherwise, the endoscopic intraventricular approach seems reasonable for intraventricular lesions protruding from the infundibulum, and the endoscopic extended transsphenoidal approach appears appropriate for localized TPS lesions. © 2012 Springer-Verlag Wien.

    DOI: 10.1007/s00701-012-1543-6

    Scopus

    PubMed

    researchmap

  • Thyroid-stimulating hormone (thyrotropin)-secretion pituitary adenoma in an 8-year-old boy: case report 査読

    Yoko Nakayama, Shinya Jinguji, Shin-ichi Kumakura, Keisuke Nagasaki, Manabu Natsumeda, Yuichiro Yoneoka, Takafumi Saito, Yukihiko Fujii

    PITUITARY   15 ( 1 )   110 - 115   2012年3月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER  

    In this report, an extremely rare case of pediatric thyrotropin-secreting pituitary macroadenoma (TSHoma) is described. An 8-year-old boy, complaining of unsteady gait, was suspected of endocrinopathy because of emaciation and muscle weakness of the legs. Endocrinological work-up established a diagnosis of hyperthyroidism due to syndrome of inappropriate secretion of TSH. Magnetic resonance imaging showed a pituitary macroadenoma with suprasellar and sphenoidal extension without cavernous sinus invasion. He underwent an endoscopic endonasal transsphenoidal adenomectory due to the diagnosis of TSHoma. The adenoma was soft and it was totally removed. Histopathological staining confirmed diagnosis of TSHoma. Postoperative evaluation revealed a subnormal level of TSH (from 13-21 to 0.03 micro U/ml), normalization of alpha-subunit (from 10.0 to 0.09 ng/ml), and as a result, hypothyroidism. The boy left the hospital with oral levothyroxine that continued until 12 months of discharge. The present 8-year-old case is the youngest case to the best of our knowledge based on a bibliographical search. Reasons for endocrinological remission following adenomectomy are (1) correct diagnosis without delay: lack of cavernous sinus invasion, (2) soft and non-fibrous adenoma tissue, and (3) endoscopic technique with wide vision and illumination: safe even for a 8-year-old child. Early recognition/detection and pituitary-conserving adenomectomy can cure TSHoma and avoid long-term medical therapy and/or irradiation, which contribute to the best interests of patients with TSHoma.

    DOI: 10.1007/s11102-010-0275-y

    Web of Science

    PubMed

    researchmap

  • Early adult-onset orbital apex Langerhans cell histiocytosis histologically confirmed during "truly spontaneous" regression 査読

    Keisuke Satoh, Masayoshi Tada, Hiroshi Shimizu, Yuichiro Yoneoka

    ACTA NEUROCHIRURGICA   154 ( 2 )   301 - 302   2012年2月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER WIEN  

    DOI: 10.1007/s00701-011-1250-8

    Web of Science

    researchmap

  • 成長障害から診断に至った頭蓋咽頭腫の1小児例

    米岡 有一郎, 神宮字 伸哉, 福多 真史, 藤井 幸彦, 長崎 啓祐, 佐藤 英利, 菊池 透

    新潟医学会雑誌   126 ( 1 )   60 - 60   2012年1月

  • A case of unifocal orbital Langerhans cell histiocytosis in an adult 査読

    Shinya Jinguji, Tokuhide Oyama, Yuichiro Yoneoka, Masafumi Fukuda, Yukihiko Fujii

    Neurological Surgery   39 ( 12 )   1183 - 1188   2011年12月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    A 34-year-old man had a 3-month history of left upper eyelid swelling and pain. Computed tomography showed osteolytic lesion of the left frontal bone. Magnetic resonance imaging (MRI) revealed a mass lesion with heterogeneously gadolinium enhancement and extension to both the lateral orbit and the frontal base. We performed mass resection via left frontotemporal craniotomy to diagnose the lesion. Pathological findings of the specimen were Langerhans cell histiocytosis (LCH). Systemic investigations revealed no sign of the disease elsewhere. The patient was diagnosed with unifocal orbital LCH and received neither chemotherapy nor radiotherapy. Follow-up MRI has shown no recurrences 2 years after surgery. Although orbital LCH rarely occurrs in adults, it should be considered in differential diagnosis of orbital tumor. The patients with unifocal orbital LCH required no treatment in addition to mass resection.

    Scopus

    PubMed

    researchmap

  • [Depiction of the cranial nerves around the cavernous sinus by 3D reversed FISP with diffusion weighted imaging (3D PSIF-DWI)].

    Go Ishida, Makoto Oishi, Shinya Jinguji, Yuichiro Yoneoka, Mitsuya Sato, Yukihiko Fujii

    No shinkei geka. Neurological surgery   39 ( 10 )   953 - 61   2011年10月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    To evaluate the anatomy of cranial nerves running in and around the cavernous sinus, we employed three-dimensional reversed fast imaging with steady-state precession (FISP) with diffusion weighted imaging (3D PSIF-DWI) on 3-T magnetic resonance (MR) system. After determining the proper parameters to obtain sufficient resolution of 3D PSIF-DWI, we collected imaging data of 20-side cavernous regions in 10 normal subjects. 3D PSIF-DWI provided high contrast between the cranial nerves and other soft tissues, fluid, and blood in all subjects. We also created volume-rendered images of 3D PSIF-DWI and anatomically evaluated the reliability of visualizing optic, oculomotor, trochlear, trigeminal, and abducens nerves on 3D PSIF-DWI. All 20 sets of cranial nerves were visualized and 12 trochlear nerves and 6 abducens nerves were partially identified. We also presented preliminary clinical experiences in two cases with pituitary adenomas. The anatomical relationship between the tumor and cranial nerves running in and around the cavernous sinus could be three-dimensionally comprehended by 3D PSIF-DWI and the volume-rendered images. In conclusion, 3D PSIF-DWI has great potential to provide high resolution "cranial nerve imaging", which visualizes the whole length of the cranial nerves including the parts in the blood flow as in the cavernous sinus region.

    PubMed

    researchmap

  • Synchronized multiple regression of diagnostic radiation-induced rather than spontaneous: disseminated primary intracranial germinoma in a woman: a case report. 査読

    Yoneoka Y, Tsumanuma I, Jinguji S, Natsumeda M, Fujii Y

    Journal of medical case reports   5   39   2011年1月

  • Insidious Extension of Pituitary Prolactinoma: Two Can&apos;t-Miss Findings Depicted on a 3.0-T MR System 査読

    Yuichiro Yoneoka, Mizuho Isogawa, Makoto Terumitsu, Hitoshi Matsuzawa, Yukihiko Fujii

    JOURNAL OF NEUROIMAGING   20 ( 3 )   267 - 271   2010年7月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:WILEY-BLACKWELL  

    BACKGROUND
    In this article, we present two can&apos;t-miss findings on preoperative magnetic resonance imaging (MRI) using a 3.0-T MR system resulting in a better surgical option in prolactinoma treatment after emergent of dopamine agonists.
    METHODS
    We reviewed six cases of pituitary prolactinoma; each had vague or occult bulk of adenoma on 1.5-T MR imaging, which were finally confirmed by surgery. Four cases were preoperatively examined with a 3.0-T MR imaging system. With the 3.0-T MR system, 3-dimension-anisotropy-contrast (3DAC) MR imaging and 3-dimension fast spoiled gradient recalled acquisition in the steady state (3D-FSPGR) imaging were used for depiction of the adenoma.
    RESULTS
    3DAC imaging revealed cavernous sinus (CS) pathology in three cases, and multiplanar reconstruction of 3D-FSPGR imaging revealed normal pituitary gland and invasive adenoma into the CS in three cases and creeping extension up to the contralateral side of the CS invasion in four cases.
    CONCLUSIONS
    Two can&apos;t-miss findings: (1) intrasellar creeping extension up to the opposite side of the adenoma main body and (2) intracavernous-localized adenoma with indistinct intrasellar mass should be carefully considered when neurosurgeons perform adenomectomy for patients with prolactinoma, even in cases of microprolactinoma.

    DOI: 10.1111/j.1552-6569.2009.00364.x

    Web of Science

    PubMed

    researchmap

  • Metabolic effects of growth hormone replacement in two pediatric patients with growth without growth hormone.

    Keisuke Nagasaki, Itaru Tsumanuma, Yuichiro Yoneoka, Shinya Jinguji, Yohei Ogawa, Toru Kikuchi, Makoto Uchiyama

    Endocrine journal   57 ( 9 )   771 - 5   2010年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Growth without growth hormone (GH) has occasionally been described in patients who have had tumors removed in the hypothalamic-pituitary area. Most of these patients have metabolic abnormalities such as obesity, dyslipidemia and fatty liver. This report describes the metabolic beneficial effects of GH replacement in pediatric patients with growth without GH. Two children in whom the growth without GH phenomenon occurred after therapy for brain tumors participated in this study. Case 1 is a 15-yr-old Japanese girl, diagnosed as having Langerhans cell histiocytosis with multiple intracranial lesions at the age of two. She showed a slight body fat increase, dyslipidemia and fatty liver. Case 2 is a 10-yr-old Indonesian boy, diagnosed with craniopharyngioma at the age of three. He was obese and had low bone mineral density (BMD). In both cases, GH replacement therapy was started at 0.042 mg/kg/week for 12 months. Body composition, BMD, and visceral abdominal area were measured every 3 months. Serum fasting blood glucose, insulin, ALT, lipid profile, leptin, and adiponectin levels were also measured every 3 months. Case 1 showed improvement of transaminase (ALT from 64 to 16 IU/L) and triglyceride (from 239 to 129 mg/dL) over 12 months, but did not show a decrease in visceral fat area or of body fat percentage. Case 2 showed a decrease in body fat percentage and visceral fat area, accompanied by elevated serum adiponectin and decreased leptin levels. In conclusion, twelve months GH replacement therapy improves metabolic abnormalities in pediatric patients with growth without GH.

    PubMed

    researchmap

  • Advanced Gastric Cancer Patient with Peritonitis Carcinomatosa Successfully Treated with a Combination Therapy of Paclitaxel and TS-1, but Relapsed with Multiple Bone Metastasis and Died from Rapidly Progressive Meningitis Carcinomatosa -Advanced Gastric Cancer with Metachronous Peritonitis Carcinomatosa and Meningitis Carcinomatosa- 査読

    Takuya Watanabe, Haruka Hirono, Katsuhiko Hasegawa, Kenji Soga, Koichi Shibasaki, Yuichiro Yoneoka

    INTERNAL MEDICINE   48 ( 3 )   151 - 156   2009年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JAPAN SOC INTERNAL MEDICINE  

    A 59-year-old man diagnosed as gastric cancer with peritonitis carcinomatosa was treated with paclitaxel and TS-1; 60 mg/m(2)/day of paclitaxel was given on days 1 and 8, and 60-80 mg/m(2)/day of TS-1 was given for 2 weeks. Six courses of combination therapy were administered, and the ascites disappeared completely. Because multiple bone metastases occurred, we attempted combination therapy with cisplatin and irinotecan hydrochloride; 50 or 30 mg/m(2)/day of cisplatin was given on day 1 or day 15, and 70 mg/m(2)/day of irinotecam hydrochloride was given on days 1 and 15. The patient achieved a remarkable response, however, intrameningeal dissemination occurred and he died from rapidly progressive meningitis carcinomatosa.

    DOI: 10.2169/internalmedicine.48.1319

    Web of Science

    researchmap

  • Spontaneous regression of isolated neurohypophyseal langerhans cell histiocytosis with diabetes insipidus.

    Keisuke Nagasaki, Itaru Tsumanuma, Yuichiro Yoneoka, Yohei Ogawa, Toru Kikuchi, Makoto Uchiyama

    Endocrine journal   56 ( 5 )   721 - 5   2009年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    In pediatric and adolescent patients, the most common causes for a thickened pituitary stalk with central diabetes insipidus are germ cell tumors, lymphocytic infundibuloneurohypophysitis (LIN), and Langerhans cell histiocytosis (LCH). We describe here a 13-year-old girl who had an abrupt onset of polyuria and polydipsia. Magnetic resonance imaging of the brain revealed thickening of the pituitary stalk, and loss of the physiological hyperintense signal of the posterior pituitary gland. Based on a histopathology, she was diagnosed as having LCH. Another LCH lesion was not detected. The prognoses for LCH patients with single-system and single-site are generally good so we decided on only simple observation. The lesion spontaneously regressed 3 months later, resembling a typical self-limiting course of LIN. In conclusion, the present case suggests that 1) radiological differential diagnosis between LIN and LCH is so difficult that histological confirmation is crucial for correct diagnosis, 2) some past cases of histologically-unconfirmed LIN can include LCH, 3) solitary neurohypophyseal LCH can shrink spontaneously up to near remission level.

    PubMed

    researchmap

  • Preoperative depiction of cavernous sinus invasion by pituitary macroadenoma using three-dimensional anisotropy contrast periodically rotated overlapping parallel lines with enhanced reconstruction imaging on a 3-tesla system. 査読

    Yoneoka Y, Watanabe N, Matsuzawa H, Tsumanuma I, Ueki S, Nakada T, Fujii Y

    Journal of neurosurgery   108 ( 1 )   37 - 41   2008年1月

  • Pituitary adenoma manifesting as an isolated abducens palsy 査読

    Atsushi Miki, Mineo Takagi, Tomoaki Usui, Haruki Abe, Yuichiro Yoneoka, Itaru Tsumanuma

    NEURO-OPHTHALMOLOGY   32 ( 3 )   155 - 158   2008年

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:TAYLOR & FRANCIS INC  

    Ocular motor nerve palsies are rare complications of pituitary adenoma. We treated a patient who presented with an isolated abducens palsy and was subsequently found to have a pituitary adenoma. A 62-year-old woman was referred to us for an evaluation of her diplopia. She had an esotropia, which was larger on right gaze, and a limited abduction OD. Visual fields were normal. CT and MRI revealed a sellar region tumor invading the right cavernous sinus without compressing the optic chiasm. A diagnosis of macroprolactinoma was made endocrinologically. Her diplopia and right abducens palsy were quickly resolved and MRI showed significant shrinkage of the tumor after she was treated with cabergoline. A sixth nerve palsy can be the sole presenting feature of pituitary adenoma and can be treated effectively with medication.

    DOI: 10.1080/01658100802115155

    Web of Science

    researchmap

  • [New diagnostic imaging methods in neurosurgery: advent of anatomical and functional neuroimaging]. 査読

    Makoto Oishi, Takeo Uzuka, Yuichiro Yoneoka, Yukihiko Fujii, Hironaka Igarashi

    No shinkei geka. Neurological surgery   35 ( 3 )   291 - 300   2007年3月

     詳細を見る

    記述言語:日本語   掲載種別:研究論文(学術雑誌)  

    Progress in imaging techniques has contributed to improvements in reliable diagnosis and surgical decision making in neurosurgery. From the viewpoint of neurosurgeons, there are two major needs in the development of imaging techniques. One is greater accuracy in demonstrating the anatomy of the brain at microscopic resolutions and the other is visualization of function or metabolism that is invisible on surgical views. Use of 3.0 T magnetic resonance imaging (MRI) in clinical patients has revealed anatomy appropriate for microsurgery at high resolution, and three-dimensional reconstruction of MRI on high-specification computers helps neurosurgeons to understand the anatomy of the brain in individual patients. Functional imaging methods such as functional MRI, positron emission tomography, and magnetoencephalography have provided new insights in brain surgery, visualizing various cerebral functions on anatomic images. Recently, diffusion tensor imaging is used to visualize neural tracts passing through subcortical white matter and MR spectroscopy is used to show the metabolic status of lesions. These tools are also forms of functional imaging. New noninvasive imaging techniques are still being developed to visualize function more easily. Here, we summarize the roles of recent imaging techniques in our previous studies and discuss the future of imaging in neurosurgery.

    PubMed

    researchmap

  • Human Kluver-Bucy syndrome following acute subdural haematoma 査読

    Y Yoneoka, N Takeda, A Inoue, Y Ibuchi, T Kumagai, T Sugai, KI Takeda, K Ueda

    ACTA NEUROCHIRURGICA   146 ( 11 )   1267 - 1270   2004年11月

     詳細を見る

    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:SPRINGER WIEN  

    We present a rare case of complete human Kluver-Bucy syndrome (KBS) following recovery from transtentorial herniation caused by acute subdural haematoma (ASDH). A 17-year-old right-handed high school boy got into stupor within five minutes after 3-rounds of sparing at boxing. Emergency computed tomographic (CT) scan showed right cerebral hemispheric ASDH, which was evacuated following intentional decompressive craniectomy. After recovery of consciousness, he developed emotional changes (placidity with loss of normal fear and anger), psychic blindness, aberrant sexual behaviour, excessive oral tendencies, increased appetite, and hypermetamorphosis in order of mention, which were observed with waxing and waning from 17th to 28th hospital day. Peri-operative CT scaning and magnetic resonance imaging showed lesions of the right temporal lobe and right-dominant orbitofrontal regions including bilateral rectal and medial orbital gyri, and the intact left temporal lobe. Two pathogeneses can be thought of and the whole picture of KBS following ASDH can arise even though one (left in this case) temporal lobe is preserved, 1) in which associated orbitofrontal lesions of the frontal lobes may correlate with occurrence of KBS, or 2) cerebral blood hypoperfusion of both temporal lobes due to increased intracranial pressure and/or compression of both posterior cerebral arteries at the edge of the tentorium cerebelli occurs.

    DOI: 10.1007/s00701-004-0373-6

    Web of Science

    researchmap

  • Erratum to: "Intrauterine methylmercury intoxication. Consequence of the inherent brain lesions and cognitive dysfunction in maturity". 査読

    Kakita A, Wakabayashi K, Su M, Yoneoka Y, Sakamoto M, Ikuta F, Takahashi H

    Brain research   887 ( 2 )   488   2000年12月

  • Intrauterine methylmercury intoxication. Consequence of the inherent brain lesions and cognitive dysfunction in maturity. 査読

    Kakita A, Wakabayashi K, Su M, Yoneoka Y, Sakamoto M, Ikuta F, Takahashi H

    Brain research   877 ( 2 )   322 - 330   2000年9月

▶ 全件表示

MISC

▶ 全件表示

共同研究・競争的資金等の研究

  • 脳機能解析

      詳細を見る

    資金種別:競争的資金

    researchmap