Congenital arteriovenous fistula with an aneurysm of the great cerebral vein and hydrocephalus treated surgically.

Aneurysms occasionally develop from the great cerebral vein as a result of congenital arteriovenous fistulae. In a recent review Hirano and Terry (1958) referred to 18 cases, nine of which were confirmed at necropsy. The example of this rare condition reported here presented as a case of hydrocephalus showing certain noteworthy features. The condition responded well to surgical treatment, but the patient died after a fall. The connexions of the aneurysm were defined at necropsy.