Aneurysmal subarachnoid hemorrhage in the first year of life: case report and review of the literature.

Introduction: Primary subarachnoid hemorrhage is rare in infancy. A bleeding arterial aneurysm as its cause is even less frequent. A review of the literature turned up 85 cases of cerebral aneurysm that occurred in the 1st year of life, 63 of them presenting with subarachnoid hemorrhage (SAH).