松果体部髄膜腫の1治験例

Meningioma of Pineal Region

I．はじめに

　松果体部髄膜腫は稀なものであり，報告は60例に満たず，頻度．性差などその臨床像には不明な点が多い．われわれは顔面痙攣の術前検査中に偶然に発見された松果体部髄膜腫を全摘出しえた1例を経験した．本腫瘍の特徴について文献的考察を加えて報告する．

A 58-year-old man was admitted to our hospital upon his request for an operation on a hemifacial spasm that had developed twelve years ago. The hemifacial spasm on the left side was the only positive neurological find-ings at the time of admission. However, a pre-operative neuroradiological examination revealed a meningioma originating in the falco-tentorial junction.

Left neurovascular decompression was initially per-formed and was followed by the excision of the tumorthrough a right parietooccipital approach. The patholo-gical diagnosis was meningothelial meningioma. The patient was discharged with no neurological deficit. There have been only a few reports on pineal meningi oma and even now this type of tumor is considered to be rare. Some similar cases reported in the literature are reviewed. The clinical aspects, clinical features and the pathological entity are discussed.