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Neurological Surgery 脳神経外科47巻6号

2019年06月発行

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総説

下垂体腫瘍の2017年WHO組織分類

著者: 西岡宏13 井下尚子23

所属機関: 1虎の門病院間脳下垂体外科 2東京都健康長寿医療センター病理診断科 3冲中記念成人病研究所

ページ範囲:P.597 - P.606

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Ⅰ.はじめに
 WHOの組織分類では,下垂体腺腫は「中枢神経系腫瘍(tumours of the central nervous system)」には含まれておらず,「内分泌腫瘍(tumours of the endocrine organs)」に記載されている.その「内分泌腫瘍」のWHO分類が2017年,実に13年ぶりに改訂され(第4版;Table1),すでにいくつかのreviewも報告されている7,9,10,14,19,23).これまで下垂体腺腫の組織分類に関しては,煩雑で多彩な組織型,組織所見と内分泌所見の乖離(サイレント腺腫など),臨床的aggressivenessの評価法や組織分類そのものの臨床的意義など,多くの問題点が指摘されていた.また組織型の名称の多くは電子顕微鏡所見に基づいた用語であり,一部の組織型の確実な診断には電子顕微鏡検索が必要とされてきた.今回の改訂ではこれらを含めて多くの改善が得られたものの依然として問題点も少なくない.
 本稿では脳神経外科医にとって必要な下垂体腺腫の新WHO組織分類について,その臨床的意義を交えて解説する.なお下垂体後葉系の腫瘍と頭蓋咽頭腫は「中枢神経系腫瘍」「内分泌腫瘍」ともに記載されているが,ここでは後者の立場から記述する.

参考文献

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掲載誌情報

出版社:株式会社医学書院

電子版ISSN:1882-1251

印刷版ISSN:0301-2603

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