False cerebral aneurysm associated with metastatic carcinoma of the brain

Abstract

✓In a patient with metastatic carcinoma of the left frontal lobe, carotid angiography revealed a false cerebral aneurysm arising from the middle cerebral vessels. At craniotomy the aneurysm was found to be surrounded by tumor and cortex. Since the clinical history excluded trauma, it was inferred that the histologically-proven invasion of the aneurysm wall by malignant cells was responsible for the formation of a false cerebral aneurysm.