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

Ultrasound scan of right kidney showed small ... The sinus in the right loin communicated via an oblique tract to a 3-cm perinephric collection abutting the lower pole of the right kidney (Figure ...