Pre- and post-operative CT scans of an infant with an aneurysm of the vein of Galen--a case report.

A five-month-old male infant presented with hydrocephalus and an intracranial bruit due to an aneurysm of the vein of Galen. Preoperative CT scans demonstrated the aneurysm, associated blood vessles, and the degree of hydrocephalus present. At operation the arteries feeding the aneurysm were obliterated. Post-operative CT scans showed that the greater part of the aneurysm was filled with thrombus. Information provided by the post-operative CT scans made it unnecessary to repeat the angiographic examinations which are more difficult and hazardous to perform in infants than in older subjects.