モリタ　シユウヘイ   Morita Shiyuuhei   森田　修平    所属   医学部 医学科（東京女子医科大学病院）    職種   助教
論文種別	症例報告
言語種別	英語
査読の有無	査読あり
表題	Brainstem pilocytic astrocytoma with H3 K27M mutation: case report.
掲載誌名	正式名：Journal of neurosurgery 略　 称：J Neurosurg ISSNコード：19330693/00223085
掲載区分	国外
巻・号・頁	129(3),pp.593-597
著者・共著者	MORITA Shuhei†, NITTA Masayuki, MURAGAKI Yoshihiro, KOMORI Takashi, MASUI Kenta, MARUYAMA Takashi, ICHIMURA Koichi , NAKANO Yoshiko, SAWADA Tatsuo, KORIYAMA Shunichi, TSUZUKI Shunsuke, YASUDA Takayuki, HASHIMOTO Kazutoshi, NIWA Akihiro, KAWAMATA Takakazu
担当区分	筆頭著者
発行年月	2018/09
概要	In this report, the authors present the first case of adult brainstem pilocytic astrocytoma (PA) with the H3 K27M mutation. A 53-year-old man was incidentally found to have a 2.5-cm partially enhanced tumor in the tectum on MRI. The enhancement in the lesion increased over 3 years, and gross-total removal was performed via the occipital transtentorial approach. The resected tissue indicated PA, WHO Grade I, and genetic analysis revealed the H3 K27M mutation. However, although the radiological, surgical, and pathological findings all corresponded to PA, this entity can easily bemisdiagnosed as diffuse midline glioma with the H3 K27M mutation, which is classified as a WHO Grade IV tumor according to the updated classification. This case highlights the phenotypic spectrum of PA, as well as the biology of the H3 K27M-mutated gliomas, and may prove to be an exception to the rule that diffuse midline gliomas with the H3 K27M mutation behave in an aggressive manner. Based on the findings of this case, the authors conclude that, in addition to detecting the existence of the H3 K27M mutation, an integrated approach in which a combination of clinical, pathological, and genetic information is used should be applied for accurate diagnosis and determination of the appropriate treatment for diffuse midline gliomas.
DOI	10.3171/2017.4.JNS162443
PMID	28960151