Anterior communicating artery aneurysm in early childhood. Report of a case.

A case of an aneurysm of the anterior communicating artery in a 13-month-old child is presented. Sixty-six cases of cerebral saccular aneurysm in children under the age of 2 years found in the literature were analyzed. The characteristics that define this group of patients are a high frequency of large or giant aneurysms, a large proportion of aneurysms of the middle cerebral artery and the posterior circulation, and the frequent location at the peripheral site. Only three cases of anterior communicating artery aneurysm were reported in the literature. The authors discuss these characteristics on the basis of development of fetal cerebral vessels.