Work

Congenital Renal arteriovenous malformation: An unusual cause of clot retention – Case report and review of the literature

Year: 2026

Type: article

Abstract: A 35-year-old male with no prior medical or surgical history presented with clot retention. Cystoscopy revealed bloody efflux from the left ureteral orifice. Ureteroscopy showed clots within the left lower renal moiety. CT angiogram and renal angiography confirmed a renal arteriovenous malformation (AVM) that was successfully embolized. To our knowledge, this is the first reported case of a congenital renal AVM in a duplex collecting system. Prior cases of congenital renal AVM presenting with gross hematuria are reviewed. This is an unusual cause of gross hematuria in patients, which occasionally can be severe. Nonetheless, selective angioembolization provides excellent outcomes.

Source: Urology Case Reports

DOI: 10.1016/j.eucr.2026.103354

Authors: Nicholas Nordin, Ronkino McCoy, Shimron Brown, Nikhil Gopal

Institution: University of Tennessee Health Science Center

Language: English

Topic: Vascular Malformations Diagnosis and Treatment

Subfield: Neurology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $1,160