[Renal arteriovenous fistula with a vein aneurysm: a case report].

: A 54-year-old woman presented with abdominal distension. Her medical history was unremarkable. Contrast-enhanced computed tomography (CT) revealed a left renal arteriovenous fistula and a large vein aneurysm, and she was diagnosed with aneurismal-type renal arteriovenous fistula. She was successfully treated with transcatheter arterial embolization using steel coils. Although she had pulmonary embolism as a serious post-operative complication, she recovered with anticoagulant therapy using heparin and warfarin. A contrast-enhanced CT scan performed 6 months after transcatheter arterial embolization did not show recanalization.