CONTINUOUS EVALUATION FOR RETROPERITONEAL HEMATOMA FOLLOWING EXTRACORPOREAL SHOCK-WAVE LITHOTRIPSY

In this paper we report on a patient with extensive retroperitoneal he matoma due to extracorporeal shock wave lithotripsy (ESWL) for a renal stone. The patient had a negative history of previous primary renal d isease or risk factors for retroperitoneal hemorrhage after ESWL. The hematoma was treated conservatively and it was completely absorbed 9 m onths after ESWL as evaluated by computed tomography. Gd-DTPA-enhanced dynamic magnetic resonance imaging (dynamic MRI) was performed immedi ately after formation of the hematoma. The decrease in renal blood flo w in the affected kidney could be observed in this patient by dynamic MRI and its time intensity curve.