Symptoms that should alert the clinician to consider diagnosis of cerebral angioma include focal convulsive seizures in patients under 30 years of age, evidence of subarachnoid hemorrhage, cranial bruit, linear streaks of calcification in x-ray films of the skull, and recurrent hemicrania. The patients in this series were proved to have a true angiomatous malformation by cerebral angiography, intracerebral operation, or autopsy. Of the 100 patients, 52 were females and 48 males.