Large perirenal hematoma after extracorporeal shock-wave lithotripsy

We report a case of a large perirenal hematoma following extracorporeal shock-wave lithotripsy (ESWL) that resulted in compromised renal blood flow and function and necessitated open surgical drainage. Caution is advised and close follow-up recommended in patients who have taken aspirin-containing compounds, are elderly, have hypertension, or exhibit a significant drop in hematocrit following ESWL.