Affiliation:
1. Division of Urology, Department of Surgery, Faculty of Medicine Tottori University Yonago Tottori Japan
2. Department of Urology Matsue Red Cross Hospital Matsue Shimane Japan
Abstract
IntroductionRenal pseudoaneurysms reportedly occur after partial nephrectomy, renal trauma, or percutaneous procedures. Renal pseudoaneurysms can also occur after renal inflammation; however, such cases are rare and seldom reported.Case presentationA 53‐year‐old man presented to our emergency room with a 3‐day history of fever and right back pain. A blood sample revealed severe inflammation and computed tomography showed an 8 mm diameter stone in the right middle ureter and hydronephrosis. The patient was diagnosed with calculous pyelonephritis and underwent emergency ureteral stenting and antibiotic therapy. On day 8 of hospitalization, hematuria and right back pain developed, and on day 9 bladder tamponade and anemia developed. Contrast‐enhanced computed tomography revealed a ruptured pseudoaneurysm, and the patient underwent successful angioembolization. The patient was discharged on day 23.ConclusionWe report a case of a renal pseudoaneurysm possibly caused by calculous pyelonephritis.