Spontaneous angiographic disappearance of an intracranial arteriovenous malformation.

A deep right hemisphere AVM was demonstrated by angiography in an 8-year-old girl soon after her presentation with a subarachnoid haemorrhage. Eight years later the AVM was no longer visible on angiography. During the interval she had been completely asymptomatic and had received no treatment. There was no residual neurological deficit or epilepsy. A similar case has previously been described and is discussed briefly along with other cases of complete AVM regression.