Abnormal connection between arteries and veins, bypassing the capillary system that can appear in any location.
Although arteriovenous malformation (AVM) has been considered to be a congenital vascular malformation, morphological differences associated with age have been indicated in the literature.
They have a higher rate of bleeding than normal vessels. AVMs can occur anywhere in the body.
Although many AVMs are asymptomatic, they can cause intense pain or bleeding or lead to other serious medical problems.