Fig 2. A 37-year-old man (patient 4) with a growing pulsatile mass and bruit caused by a long-standing high-flow arteriovenous fistula in the right anterior lower neck. A, Cutaneous branches of the right external carotid artery are dilated. Multiple dilated venous pouches are connected to the external jugular vein. B, During the compression around the shunt by the circular ring device, contrast medium stagnates within the device margin. C, Final angiogram obtained after glue embolization shows no further shunt. D, Surgical resection specimens were obtained by en bloc resection. Note the presence of glue in the dilated malformed vessels (arrow).