Canine gastric leiomyosarcoma: Case report

Abstract

Leiomyosarcomas are malignant neoplasms, with moderate metastatic potential and that usually affect the small intestine and stomach of elderly animals. They are uncommon and account for about 1% of all malignant tumors in companion animals. A 10-year-old male Rottweiler canine, 46 kg, was treated with a history of difficulty in locomotion in the pelvic limbs, apathy, prostration, pain on abdominal palpation, as well as lack of appetite for three days. Complementary tests, complete blood count and serum biochemistry (aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, urea, creatinine) and abdominal ultrasonography were requested. The ultrasonographic findings showed thickening in the pyloric antrum region (1.10cm), suggesting gastritis, and also in the gastric fundus region and pyloric antrum, a hypoechoic structure with irregular borders (3.21cm x 3.32cm) was observed. The animal was hospitalized and subsequently underwent surgery for resection of the mass and completion of diagnosis through histopathological and immunohistochemical. The aim of this study is to report a clinical-surgical case of a Rottweiler canine submitted to pylorectomy with gastroduodenostomy due to gastric leiomyosarcoma.