Application of Billroth II gastrojejunostomy and a biliary stent in a dog with gastric adenocarcinoma and the associated extrahepatic biliary obstruction

Abstract

An 11-year-old intact female chow chow dog was presented for evaluation of intermittent vomiting and anorexia for a month.On ultrasonographic examination, gastric pylorus hypertrophy which compressed common bile duct was identified. The gallbladderwas significantly enlarged and mucocele was suspected. Cholecystectomy and gastric full thickness biopsy were performed and gastricadenocarcinoma was diagnosed by histopathological examination. Billroth II gastrojejunostomy using thoracoabdominal-stapler (TAstapler)was performed. On surgery, hypertrophied tissue suspected of tumour was also found adjacent to the major duodenal papilla.After surgery, vomiting disappeared, and the patient regained appetite. On postoperative day 90, the patient was presented vomiting andjaundice again. On ultrasonography, the common bile duct was dilated and a narrowing of diameter was identified adjacent to majorduodenal papilla. Biliary stenting with double wired nitinol uncovered stents was performed. On abdominal radiography, the diameterof bile duct stricture region was increased 7 days postoperatively. The patient had no complications related to biliary stent and died ofgastric adenocarcinoma 1 year postoperatively.