Ruptured congenital aneurysm of anterior cerebral artery; report of a case with successful surgical removal.

This paper describes a case of intracerebral hiemorrhage due to rupture ofa congenital aneurysm situated on the right anterior cerebral artery. After a series of acute cerebral vascular incidents the clinical picture was that produced by a rapidly expanding frontal lesion. After full investigation, including air encephalography, the diagnosis of ruptured anterior cerebral aneurysm was made and the aneurysm was successfully extirpated at operation. Dandy (1944) met twenty-five examples of aneurysms involving the anterior cerebral artery and anterior communicating artery, six of which he exposed at operation. In one of these cases he was able to excise the aneurysm, which was arising from the right anterior cerebral artery, after clipping the internal carotid artery.