視床血管芽腫の1例

A Case of Hemangioblastoma in the Thalamus

I．はじめに

　頭蓋内に見られる血管芽腫はそのほとんどが小脳に発生し，時に延髄や脊髄にも見られる．しかしテント上に発生する血管芽腫の報告は比較的稀で，文献上渉猟し得た限りでは現在まで80例の報告があるのみである，またその中で視床に発生したものは80例中1例と特に少ない．今回われわれは視床に発生したテント上血管芽腫の1例を経験したので文献的考察を加え報告する．

Supratentorial hemangioblastoma is encountered very rarely. About 80 cases in all have been reported. The authors present a case of supratentorial hemangioblas-toma in the thalamus with gradually enlarging cysts.

The patient was a 45-year-old man with complaints of left hemiparesis and headache. Computed tomo-graphic scans of the brain showed a cystic mass with mural nodule in the right thalamus. Left vertebral angiography demonstrated a vascular tumor fed by a thalamogeniculate artery. A right temporo-parietal cra-niotomy was performed and the tumor was totally re-sected through the transcortical approach. The histolo-gical diagnosis was hemangioblastoma. Post-operative course was good except for a minor complication of the left lower quadrant homonymous hemianopsia and left hemiparesis which had disappeared at the time of dis-charge.