Partial Gastro-duodenectomy and Gastrojejunostomy in a Dog with Pyloric Adenocarcinoma

Abstract

A female 11-year-old Shiba was referred to Animal Medical Center of Yamaguchi University with frequent vomiting lasting for two months. The dog lost weight (body condition score: 3/9) at the first admission. Abdominal computed tomography revealed severe stomach extension and thickening of the stomach wall of the pylorus. Under an endoscopic examination, a pyloric mass was identified and endoscopic biopsy of the mass was strongly suggestive of gastric adenocarcinoma. After two weeks of medical management of the dog, surgical removal of the pyloric mass was performed. One-third of distal stomach containing the pyloric mass, as well as 15 mm of duodenum proximal to common bile duct opening, were surgically removed, and after that gastroenterostomy with Billroth II was performed. The histopathological diagnosis of the mass was gastric adenocarcinoma without lymphatic metastasis. No clinical recurrence or postoperative complications has been observed for 7 months after operation. This case suggested that aggressive surgical treatment were important for improvement in quality of life of canine gastric adenocarcinoma cases with no metastatic lesion at preoperative examination.