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Neurological Surgery No Shinkei Geka Volume 22, Issue 3 （March 1994）

Neurological Surgery 脳神経外科 22巻3号（1994年3月発行）

Japanese English

症例

嚢胞内出血と慢性硬膜下血腫を伴った大脳穹隆部クモ膜嚢胞の1手術例 A Case of Convexity Arachnoid Cyst Associated with Chronic Subdural Hematoma and Intracystic Hemorrhage 大倉章生 ¹ , 野口眞志 ¹ , 弓削龍雄 ¹ , 丸岩光 ¹ , 松永雅道 ¹ , 重森稔 ¹ Akira OKURA ¹ , Shinji NOGUCHI ¹ , Tatsuo YUGE ¹ , Hikaru MARUIWA ¹ , Masamichi MATSUNAGA ¹ , Minoru SHIGEMORI ¹ ¹久留米大学脳神経外科 ¹Department of Neurosurgery, Kurume University School of Medicine キーワード： Archniod cyst , Convexity , CSDH , Operative findings Keyword: Archniod cyst , Convexity , CSDH , Operative findings pp.273-277

発行日 1994年3月10日 Published Date 1994/3/10

DOI https://doi.org/10.11477/mf.1436900807

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Abstract 文献概要
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I．はじめに

　クモ膜嚢胞は全頭蓋内腫瘤の約1％を占めるといわれており^1），その大半は中頭蓋窩や後頭蓋窩に発生する．しかし，大脳穹隆部に発生するものは比較的稀である．クモ膜嚢胞に慢性硬膜下血腫を伴う症例は散見されるが，その発生機序については未だ不明な点も多い．今回著者らは大脳穹隆部クモ膜嚢胞と，その直上に限局した慢性硬膜下血腫を伴う症例を経験したが，血腫の形成機序を考える上で極めて示唆に富む症例と考えられた．そこで本例の画像及び手術所見を提示し，その発生機序について若干の文献的考察を加え報告する．

Arachnoid cysts account for about 1% of all intracra-nial tumors, in which about 50% arise from the middle cranial fossa, and rarely occur at the cerebral convexity. They sometimes are associated with chronic subdural hematoma (CSDH) but the exact mechanism of their development is still unclear. A 15-year-old boy was admitted to our hospital with an arachnoid cyst at the right frontal covexity.

When he experienced recurrent generalized seizure, CT and MRI revealed CSDH localized at the surface of the arachnoid cyst. Radical operation for the cyst with CSDH was successfully performed. As far as we know, it is rare that CSDH and hematoma are colocalized over an arachnoid cyst at the cerebral convexity. In this report, the operative findings of this patient and possi-ble mechanism of CSDH formation were reported.