Gastroesophageal resection and anastomosis in a dog with a caudal oesophageal leiomyoma with subsequent fluoroscopic oesophagram

Abstract This case report describes the clinical presentation, diagnostic evaluation, surgical technique and postoperative treatment of a 10‐year‐old castrated male mixed breed dog that was presented for lethargy and hyporexia with pale mucous membranes, a heart murmur and melena. Bloodwork demonstrated a regenerative anaemia, and a computed tomography scan and upper gastroesophageal endoscopy revealed a soft tissue mural mass at the gastroesophageal junction. A gastroesophageal resection and anastomosis was performed to remove the mass, the histopathology of which was consistent with a leiomyoma. Two months later, a fluoroscopic swallow study was performed after reported intermittent regurgitation, gagging, hacking and hypersalivation. This revealed gastroesophageal reflux and oesophageal hypomotility, which was worse in the caudal oesophagus. A fluoroscopic swallow study can be helpful to specifically characterise complications and guide patient‐specific management changes. This is the first clinical report of a gastroesophageal resection and anastomosis with a follow‐up oesophagram in a dog.