Head CT > Stroke > Hemorrhage Due to AM

Hemorrhage Due to Arteriovenous Malformation

An underlying arteriovenous malformation (AVM) may or may not be visible on a CT scan. However, prominent vessels adjacent to the hematoma suggest an underlying arteriovenous malformation. In addition, some arteriovenous malformations contain dysplastic areas of calcification and may be visible as serpentine enhancing structures after contrast administration.

The CT on the left shows hemorrhage (arrow) due to underlying AVM (arrowheads). The arteriogram on the right shows the tangle of vessels (arrowheads) of the AVM. This lesion would be considered for intravascular embolic therapy.