Renal arteriovenous fistula

This disease is rare. There are many branches in the arteriovenous, venous trunk or main segment, such as varicose veins. There are two types of arteriovenous fistulas. One is congenital and the other is acquired. The latter account for less than 25% of patients. Here we mainly discuss congenital arteriovenous fistula. Acquired arteriovenous fistula can be secondary to trauma, arteriosclerosis, tumor and renal biopsy.