Acquired megaesophagus in a dog – case report

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Abstract
Acquired megaesophagus is an uncommon cause of regurgitation in dogs. Diagnosis is confirmed by simple or contrast radiographs, endoscopy, tomography, scintigraphy, or magnetic resonance imaging. Esophagography with barium sulphate contrast is the most commonly used method, however, it may be inconclusive if dilation marking does not occur. This paper reports the case of a 9-year-old female dog, with a history of regurgitation over six months, simple and contrast radiographic exams showing no evidence of megaesophagus. The esophagography exam was repeated with the addition of barium contrast mixed with commercial dry pet food, which verified esophageal dilatation and confirmed megaesophagus. Although this technique is not widely used, it is an effective alternative method for diagnosis of canine megaesophagus, particularly when other radiographic approaches are inconclusive.