Congenital Esophageal Disorders of Dogs
Type | Cause | Breeds Most Often Affected |
|---|---|---|
Congenital megaesophagus | Abnormal nerve development in esophagus; sometimes part of more widespread nerve, metabolic, or digestive problems | Chinese Shar-Peis, Fox Terriers, German Shepherds, Great Danes, Irish Setters, Labrador Retrievers, Miniature Schnauzers, Newfoundlands; often part of laryngeal paralysis-polyneuropathy complex in Dalmatians and Pyrenees Mountain Dogs |
Vascular ring entrapment | Physical constriction of the esophagus by other tissues, especially blood vessels | Boston Terriers, German Shepherds, Irish Setters |
Cricopharyngeal achalasia | Failure of the cricopharyngeal muscle (in the throat) to relax during swallowing | Cocker and Springer Spaniels |