大脳基底核部発生のEmbryonal Carcinomaの1症例

A Case of an Embryonal Carcinoma Arising in the Basal Ganglia of the Cerebrum

I．はじめに

　頭蓋内原発germ cell tumorの発生部位は，松果体部と鞍上部が多く，組織型はgerminomaが多い^2,5）．今回，われわれは大脳基底核部に発生したgerm celltumorで病理組織学的にembryonal carcinomaとtera—tomaのmixed typeと診断された症例を経験した．embryonal carcinomaが大脳基底核部に発生した症例の報告は極めて少ない^{1,12,17,19）}ようであるので文献的考察を加えて報告する．

The occurrence sites of intracranial primary germ cell tumors are most often the pineal and suprasellar re-gions. The histological type observed most frequently in these tumors is germinoma. Cases of embryonal car-cinoma arising in the basal ganglia are rarely reported. To our knowledge, only 4 such cases have been pre-viously reported in the literature. A case of an embryonal carcinoma arising in the basal ganglia is re-ported. A 17-year-old boy was admited to our hospital on July 30, 1988 because of headache and vomiting, and a right hemiparesis.