“…Various hypotheses, including trauma, 2,7) surgery, 10,13) and dural sinus thrombosis, 1,6) have been presented, but the etiology has never been fully explained. Dural AVFs are now thought to be acquired lesions 1,3,6) caused by events such as head injury, craniotomy, or sinus thrombosis triggering the opening of physiological dural arteriovenous connections 8,12) and resulting in the formation of a dural AVF.…”