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  • Title: Clinical and radiographic signs in primary and metastatic esophageal neoplasms of the dog.
    Author: Ridgway RL, Suter PF.
    Journal: J Am Vet Med Assoc; 1979 Apr 01; 174(7):700-4. PubMed ID: 429231.
    Abstract:
    Esophageal neoplasms were diagnosed in 8 of 49,229 dogs seen over the last 11 years at the Veterinary Medical Teaching Hospital of the University of California at Davis. The neoplasms were primary in 2 dogs and metastatic to the esophagus in 6 dogs, with thyroid carcinoma being the most common site of the primary tumor. The most common clinical signs were regurgitation, dysphagia, weight loss, development of neck masses, and respiratory difficulties. It was concluded that the clinical signs often can be misleading. The interpretation of survey radiographs, barium contrast studies, or fluoroscopic studies often provide the initial data base. The final diagnosis requires histologic examination. Retention of air in the esophagus (with or without esophageal displacement) and motor dysfunction (with or without gross morphologic changes) are the most important criteria for radiographic diagnosis.
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