Arteriovenous fistula of the groin in a drug abuser with endocarditis

Intravenous drug abusers commonly develop endocarditis due to injection of particulate matter that can cause endothelial damage to the valves. The frequent need to access the venous system can result in vascular traumas with potential complications including arteriovenous (AV) fistulas. Here, we present the case of an intravenous drug abuser with endocarditis and an unusually large AV fistula in the groin. The patient was successfully operated for endocarditis. However, the AV fistula was at the time not acknowledged. The combination of ileofemoral vein thrombosis and a large AV fistula led to pulmonary septic embolism and life-threating, right-sided heart failure. Computed tomography scan did not reveal the AV fistula, but suspicion was raised. Ultrasound diagnosed and revealed the magnitude of the AV fistula, and the patient was treated with a minimally invasive percutaneous technique.