Intravenous pyelogram showed gas confined to the right upper renal pelvis and perinephric ... intravenous pyelogram, abdominal ultrasound, MAG3 renogram and ... and surrounding edema.

Case 2: Ultrasound scan (13072001) shows the sinus in the right loin (A) communicating via an oblique tract to a 3-cm perinephric collection abutting the lower pole of right kidney (B) Full size image ...