The urinary bladder presented multiple strongly shadowing calculi. The bladder wall was within normal limits. The urethra and ureters were not obstructed at the level of the urinary bladder. The left kidney was mildly swollen in contour measuring 5.7cm and the right kidney measured 6.4cm. The left kidney did not appear inflamed, however medullary calculi were present and numerous. No hydronephrosis was noted. The right kidney presented multiple medullary calculi, swollen ill defined cortices and poor corticomedullary definition. Some echogenic perinephric fluid was noted that continued along the fascial plane highly suggestive for either hemorrhage or urine or a combination. This is suggestive for aggressive nephritis likely due to passage of calculi from the kidney to the urinary bladder. No hydroureter was noted at this time. The liver was subnormal in size at 2.4cm in maximum width in short axis. A 1.2cm splenoazygos shunt was present. The pre-shunt portal vein measured 0.45cm and post shunt portal vein measured 0.25cm. The caudal vena cava and aorta in the same position measured 0.5cm each highly suggestive for splenoazygos shunt.