Cerebral hemorrhage secondary to arteriovenous malformation

Discussion:

A young patient presenting with intraparenchymal hematoma, with no history of hypertension, drug use or trauma should be suspected of harboring an underlying lesion.  Typically AVM, cavernoma, aneurysm and venous sinus thrombosis would be considered.  The site and absence of SAH make an aneurysm unlikely, and there was no evidence of underlying lesion separate from the hematoma to suggest a cavernoma.  The prominent vessels prompts the diagnosis of AVM - which was confirmed on MRI, MRA and subsequent DSA.  An important differential diagnosis for this site if of transverse sinus thrombosis with Labbe territory venous hemorrhage - excluded in this case by the obvious AVM.

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