嗅神経を含んだ頭蓋底脳髄膜瘤の1例

A Case of Basal Encephalomeningocele (Transethmoidal Type) Containing the Olfactory Nerve

I．はじめに

　脳瘤のうち頭蓋底脳髄膜瘤に関する報告はわが国では少なく，数例^{1,12,16,21,26,29-31）}を数えるのみである．今回われわれはCTにより診断され篩板に欠損孔があり，その部に嗅神経が陥入し膨隆している頭蓋底脳髄膜瘤（transethmoidal type）の1例を経験し，外科的に良好に処置し得たので若干の文献的考察を加え報告する．

An experience of operative case of basal (trans-ethmoidal type) encephalomeningocele is reported.

A 3-year-old boy complained of continuous, spon-taneous cerebrospinal fluid rhinorrhea and right intra-nasal mass lesion. The rhinorrhea began when one year old. He suffered from meningitis at the age of two. When he was three years old, the intranasal mass and CSF rhinorrhea were perceived. On admission he had normal general status and no abnormality in neurological examination. The usual axial computed tomography showed a small mass in the intranasal cavity.