Pleomorphic xanthoastrocytoma（Kepes）の1症例

Pleomorphic Xanthoastrocytoma (Kepes): A case report

I．はじめに

　グリオーマの細胞生物学的悪性度は，一般にその病理組織像に深く関係している．しかし，1979年Kepesらは比較的若年者にみられるグリオーマのうち一見悪性の組織像にもかかわらず良性の臨床経過を示す症例があることに注目し，その特徴的組織像からpleomorphic xanthoastrocytomaという名称を提唱した．今回われわれは，臨床病理学的にいわゆるpleomorphic xanthoastrocytomaと考えられる1症例を経験したので，若干の考察を加えて報告する．

A case of tumor to be diagnosed as pleomorphic xanthoastrocytoma (Kepes) is reported. This patient was a 34-year-old female with a 6-year history of TIA. Neurological examination on admission showed no abnormalities except for bilateral choked disc. Plain CT scan revealed a well-defined low density area with asmall high dlensity region in the right temporal lobe. The small high density region and a part of peripheral portion of low density area were moderately enhanced with contrast media. At operation there was a cyst containing xanthochromic fluid at 1.5 cm depth from the cerebral surface.