Arteriovenous fistula aneurysms are defined by an expansion of the intimal, medial and adventitial layers of the vessel wall to a diameter of more than 18 mm. Treatment of arteriovenous fistula aneurysm is indicated if there is pain, risk of haemorrhage and flow disturbance (either low or high flow).
It would be a new level of frightening to have this condition & then worry about potentially rupturing one of them. It would look like a scene from a horror movie.
I've just seen such bad vesels in older patients with varicea in their lotería limbs 😮