Late‐onset ureteric urinoma with intermittent jet flow as a complication of ureterolithotomy

We present the case of a late‐onset urinoma in a 47‐year‐old man with a history of right ureterolithotomy performed 6 months previously, following 2 unsuccessful attempts at extracorporeal shock wave lithotripsy. The ipsilateral kidney was nonfunctional and hydronephrotic. The urinoma did not show enhancement on contrast‐enhanced CT and intravenous pyelography. Sonography revealed turbulence in the urinoma and jet flow from the ureter. Lab studies of fluid obtained by percutaneous puncture and aspiration yielded misleading findings for urine and revealed the presence of hemosiderin‐laden macrophages. The urinoma was surgically resected and ureteroneocystostomy was performed. © 2004 Wiley Periodicals, Inc. J Clin Ultrasound 32:264–266, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI: 10.1002/jcu.20029