Multiple oligodendroglioma--case report.

A 32-year-old male was hospitalized with headache and disturbance of consciousness. Computed tomography (CT) revealed a tumor and an intracranial hematoma in the right frontal lobe. The tumor was totally removed, and postoperative radiation therapy was administrated locally at 50 Gy. Five years later, he experienced sudden onset of headache and vertigo. CT demonstrated a mass lesion with a hematoma in the cerebellar vermis. The tumor was subtotally removed and he underwent postoperative local irradiation at 50 Gy as well as ventriculoperitoneal shunting. Four years later, he complained of visual and gait disturbances, and CT disclosed a tumor in the suprasellar region. Following partial removal of the tumor, local brain irradiation was given at 40 Gy. Histological examination proved all three tumors to be oligodendrogliomas with no evidence of malignant change.