Idiopathic renal arteriovenous fistula demonstrating a huge aneurysm with a high risk of rupture: Report of a case

This paper reports a case of an idiopathic renal arteriovenous fistula demo nstrating a huge guitar-shaped aneurysm, which required a total nephrectomy . Although the patient insisted on having been asymptomatic, echocardiograp hy and cardiac catheterization clearly revealed that the influence on hemod ynamics was unexpectedly significant. Interestingly, the aneurysm was also considered to have a high risk of rupture, which was preoperatively suggest ed by an aneurysm wall projection discernible on both computerized tomogram s and angiograms, and this suspicion,vas also convincingly supported by the perioperative and histopathological findings.