Esofagectomia torácica parcial no tratamento de leiomioma em esfíncter esofágico inferior de cão Partial thoracic esophagectomy in the treatment of leiomyoma in the lower esophagealsphincter of dogs

Esophagealtumors are rare in dogs, among these, leiomyomais the most reported. The most common clinical signs are dysphagia, regurgitation and emaciation. An 8-year-old, Dalmatian male dog was referred to the Hospital de Clinicas Veterinarias (HCV), Universidade Federal do Rio Grande do Sul (UFRGS) presenting drooling, regurgitation, vomiting, abdominal pain and emaciation. Endoscopic examination revealed a growth near the lower esophageal sphincterand gastric fundus, and samples were collected for histopathological examination. The results were consistent with esophageal leiomyomaand gastric hyperplasia. Esophagealresection and esophageal-gastric anastomosis was conducted. Three days post-operative the animal died. At necropsy no changes were observed macroscopically, and microscopically significant renal insufficiency was suggested. This report aims at presenting a case of leiomyomaat lower esophageal sphincterin a dog, in which the adopted therapy was tumor exeresis by thoracotomy.