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Neurological Surgery No Shinkei Geka Volume 22, Issue 12 （December 1994）

Neurological Surgery 脳神経外科 22巻12号（1994年12月発行）

Japanese English

症例

鞍上部に発生した異所性下垂体腺腫の1例 Suprasellar Ectopic Pituitary Adenoma:Report of a case 田中敏樹 ¹ , 渡辺一良 ¹ , 中洲敏 ² , 半田譲二 ² Toshiki TANAKA ¹ , Kazuyoshi WATANABE ¹ , Satoshi NAKASU ² , Jyoji HANDA ² ¹公立甲賀病院脳神経外科 ²滋賀医科大学脳神経外科 ¹Department of Neurosurgery, Kohka Hospital ²Department of Neurosurgery, Shiga University of Medical Science キーワード： Ectopic pituitary adenoma , Suprasellar tumor , MRI Keyword: Ectopic pituitary adenoma , Suprasellar tumor , MRI pp.1141-1145

発行日 1994年12月10日 Published Date 1994/12/10

DOI https://doi.org/10.11477/mf.1436900950

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Abstract 文献概要
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I．はじめに

　異所性下垂体腺腫は非常に稀で，その中でも鞍上部に発生したものはさらに少なく，知り得た範囲内では現在までに9例が報告されているに過ぎない^{10,12,15,17,18,21,24，27,28）}．今回われわれは，手術により確認しえた異所性下垂体腺腫を経験したので，文献的考察を加えて報告する．

An extremely rare case of an ectopic pituitary adeno-ma in the suprasellar region is reported.

A 57-year-old man was referred to us in March, 1993, because of bitemporal hemianopsia. Magnetic reso-nance imaging (MRI) and computed tomography (CT) revealed a well-circumscribed enhancing mass in the suprasellar region. Sagittal tomography of the skull showed normal-sized sella turcica. Endocrinological tests were almost within normal range.

The tumor was totally removed by combined rightsubfrontal and interhemispheric approach. At the time of the operation, we confirmed that the tumor did not continue to the pituitary gland and that the diaphragma sellae was intact. Histological diagnosis of the tumor specimen was pituitary adenoma. Post-operative MRI showed a normal pituitary gland, thus supporting thediagnosis of ectopic pituitary adenoma. To our know-ledge, only ten cases of suprasellar ectopic pituitary adenoma have been reported, including our case. Pathogenesis of ectopic pituitary adenoma was briefly discussed.