SUCCESSFUL MANAGEMENT OF AN IATROGENIC BILIARY PSEUDOCYST IN A DOG

A two-year-old, female Australian cattle dog was presented for treatme nt of a congenital, intrahepatic portosystemic shunt. The shunt was at tenuated using a transportal approach. The dog developed an abdominal mass four weeks later A 16-cm diameter biliary pseudocyst arising from the hepatic surgical site was identified during ultrasonographic exam ination. The cyst was marsupialized to the right abdominal wall surgic ally. Bile-stained fluid drained from the stoma at an initial rate of 10 ml/kg body weight per day, decreasing to 1 ml/kg body weight per da y over four weeks. The stoma closed five weeks after surgery, and no f urther evidence of fluid accumulation was detected ultrasonographicall y. Eighteen months postoperatively, the pseudocyst has not recurred.