Adenocarcinoma of the esophagogastric junction in a dog
DOI:
https://doi.org/10.26605/medvet-v19n1-6874Keywords:
canine, cancer, esophagus, stomach, neoplasiaAbstract
Primary esophageal tumors in dogs and cats are rare and the main types in the species can be epithelial (papilloma and squamous cell carcinoma) or mesenchymal (leiomyoma, leiomyosarcoma, fibrosarcoma, osteosarcoma or undifferentiated sarcomas). This study aimed to describe the clinical and anatomopathological characteristics of a tumor in the esophagogastric junction in a dog. A 12-year-old neutered male Pitbull dog with a history of hyporexia and weight loss for two months, was received at a veterinary teaching clinic in Campinas, São Paulo. The initial clinical suspicion of megaesophagus was ruled out by imaging tests and the esophagram suggested obstruction at the esophagogastric junction. During the period of additional examinations, even with adjustments in dietary management, there was rapid and marked weight loss and clinical worsening, which led the owners to opt for the animal's euthanasia. At necropsy examination, the cadaver was emaciated and a large, white, firm, intramural mass was observed at the esophagogastric junction, causing marked obstruction of food flow. Microscopically, the tumor consisted of an epithelial neoplasm, with a tubular arrangement, and distribution from the lamina propria of the esophagus to the submucosal, muscular, and adventitial tunics of the organ. There was neoplastic infiltration in the submucosa and muscularis of the adjacent stomach, in addition to foci of metastasis in the liver, mesenteric lymph nodes, and adrenal gland. The morphological diagnosis was tubular adenocarcinoma in the esophagogastric junction. Although rare, this type of cancer should be considered in the differential diagnosis of esophageal disorders that cause regurgitation and chronic weight loss in dogs.Downloads
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Copyright (c) 2025 Maurício Franco Zanette, Juliana Aparecida Bombardelli, Ronaldo Gomes Gargano, Felipe Nunes Felippe, Claudia Kiyomi Minazaki, Alex Junior Souza de Souza
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