Neoplastic cerebral aneurysm from metastatic gestational choriocarcinoma. Case report.

This case of metastatic gestational choriocarcinoma presented as intracerebral hemorrhage from an atypical distal middle cerebral artery aneurysm. Operative evacuation of the intracerebral hematoma was undertaken and histopathological examination revealed choriocarcinoma invading the vessel wall. Neoplastic cerebral aneurysms are unusual, being reported in metastatic choriocarcinoma, cardiac myxoma, bronchogenic carcinoma, and undifferentiated carcinoma. Metastatic choriocarcinoma should be considered in the differential diagnosis of intracerebral hemorrhage in women of child-bearing age. Recent advances in treatment have resulted in a 75% cure rate for metastatic choriocarcinoma.