URINARY OBSTRUCTION SECONDARY TO A RETROPERITONEAL CARCINOMA IN A DOG

A 7-year-old, intact, anestrous, female Doberman pinscher was presente d with anorexia and hindlimb swelling of three days duration. Renal fa ilure was documented. Survey radiographs revealed patchy alveolar cons olidation and bilateral renomegaly with increased retroperitoneal and sublumbar soft tissue opacification. Renal ultrasonography showed bila teral hydronephrosis with ectatic ureters. A retroperitoneal carcinoma was identified via fine needle aspiration. Percutaneous nephropyeloce ntesis and antegrade nephrography further delineated the hydronephrosi s and ureteral obstruction.