A recent study demonstrated that young dogs may have a disorder of esophageal dysmotility without overt megaesophagus. Clinical signs can be similar to those of megaesophagus, although some dogs have abnormal motility during an esophagram without clinical signs. In over half the cases, the condition improved or resolved with age. Terrier breeds were over-represented.
Last full review/revision March 2012 by Alan Glazer, DVM, DACVIM; Patricia Walters, VMD, DACVIM, DACVECC