Arteriovenous malformation of the cauda equina with arterial supply from branches of the internal iliac arteries

✓ A case is presented in which an arteriovenous malformation of the cauda equina received all of its arterial supply from branches of the internal iliac arteries. Surgical excision of the malformation was successfully accomplished. The need for thorough knowledge and arteriographic demonstration of all possible routes of arterial supply for such lesions is stressed.