Symptomatic cerebral vasospasm after intraventricular hemorrhage from ruptured arteriovenous malformation.

We present a rare case showing symptomatic vasospasm after intraventricular hemorrhage from a ruptured arteriovenous malformation. No significant subarachnoid hemorrhage in the basal cisterns was observed on computed tomography in the entire course of illness. Although most cases showing vasospasm are associated with the deposition of blood in the basal cisterns, this case suggests the possibility of some other important factor in causing the subsequent development of vasospasm.