Congenital renal arteriovenous malformation: Transcatheter embolization with gelfoam

Congenital renal artenovenous malformations (AVMs) are rare lesions with a reported incidence of 0.04%. Although frequently silent, they may be associated with haematuria, cardiac failure due to increased cardiac output and hypertension due to renal ischaemia distal to the fistula Transcatheter arterial embolization with various temporary/permanent occlusive materials have been tried to treat symptomatic cases. We report here two cases of symptomatic congenital renal arteriovenous malformations presenting in adult males with frank haematuria. Gelfoam was used for embolization of the AVM. Both the cases had symptomatic relief. They have no further episode of haematuria for the last four and half years (case 1) and eight and half months (case 2). No immediate or delayed complications were noted.