Fig. 2
From: Traumatic facial arteriovenous fistula: a rare case report and literature review
Preoperative DSA images. (A) Lateral external carotid artery angiography indicates AVF, supplied by the left facial artery. (B) In the venous phase, the left projection of the face indicates blood flow to the facial vein, making it tortuous and dilated. (C) The blood then flows back into the left ophthalmic vein and into the intracranial vein. The star indicates the ophthalmic vein. (D) The anterior projection of the face indicates that the blood drains through the superficial facial veins to the right lateral veins and eventually into the right external jugular