Extracalvarial meningioma

Extracalvarial meningioma:Report of a Case

Ⅰ．はじめに

　Neuroaxis以外に異所的に発生する頭蓋外髄膜腫は，1904年Winlderの報告以来，きわめて稀に報告されている．最近我々も，頭部皮下腫瘤で，詳細なレ線学的検索により広義の頭蓋外髄膜腫と呼びうる1例を経験したので，本症の概念および類型に関して，若干の文献的考察を加えて報告したい．

A case of extracalvarial meningioma was reported.

75-year-old man was admitted to our department on November 11, 1974 because of a slowly growing tumor in the right frontoparietal area. The tumor was ovoid and 15×13 cm in size, protruding 5 cm above the skin level, and covered by the normal scalp. Neurological and electroencephalographic examination were negative. Spinal tap showed an opening pressure of 90 mm of water and clear CSF with 62 mg/dl of protein content.