巨大な前頭葉皮質下のGerminomaの1例

A Case of Large Germinoma in Bilateral Frontal Region

Ⅰ．はじめに

　われわれは両側前頭葉皮質下の巨大なgermlnomaを経験し，PEG上，松果体部に原発巣を認めなかった．この部位の腫瘍は，現在まで著者らの知る限り10例しか報告されていないので，電顕的検索を加えて報告する．

Though most of ectopic pinealoma occurs in the midline of cerebral base, only ten cases of frontal subcortical germinomas were reported in Japan as far as we know in literature.

The patient, 20 year-old male, was admitted to our hospital because of blurred vision of the right eye and somnolence. Neurological examination on admission revealed bilateral choked discs and impaired visual acuity of both eyes with visual field defect of the right eye. A large deep hifrontal tumor was noted by cerebral angiography and pneumoventriculography done at the time of ventricular drainage.