A thrombosed giant MCA aneurysm in a ten-week-old infant.

A 10-week-old child was operated upon for a left temporal intracerebral haematoma resulting from a ruptured giant MCA aneurysm. The aneurysm was found accidentally during the operation because there was no filling on angiography. The aneurysm was clipped successfully and the child's postoperative course was uneventful. Similar cases in the literature as well as possible aetiological circumstances in childhood aneurysms are discussed.