At least once it has been caused by congenital megaesophagus in a six year old dog.

Chagas disease is one cause of megaesophagus in humans.

One of the primary dangers to a dog with megaesophagus is aspiration pneumonia.

An important distinction in recognizing megaesophagus is the difference between when a dog regurgitates or vomits.

There are several theories on how megacolon (and also megaesophagus) develops in Chagas disease.

Symptoms include weakness, difficulty eating, acute facial nerve paralysis, and megaesophagus.

In human pathology a condition known as achalasia may predispose a person to slowly develop megaesophagus.

This can also be a symptom of megaesophagus, which is a health issue for the Wire Fox Terrier.

Symptoms include rear limb weakness, decreased reflexes, muscle atrophy, megaesophagus, and loss of bark.

Rarely, megaesophagus is evident on radiographs.

Often when myasthenia gravis is diagnosed in older dogs the first symptom the dog may manifest is megaesophagus.

Symptoms include vomiting, depression, not eating, weight loss, dilated pupils, third eyelid protrusion, sneezing, slow heart rate, and megaesophagus.

Autonomic disease imparted by Chagas may eventually result in megaesophagus, megacolon and accelerated dilated cardiomyopathy.

In achalasia, one of the defects is failure of the LES to relax properly; causing Megaesophagus.

Dogs with megaesophagus or other conditions causing frequent vomiting or regurgitation are at high risk for aspiration pneumonia after laryngeal tie-back.

Regurgitating is a common symptom of megaesophagus while vomiting is not necessarily associated with megaesophagus.

The most common features of late chronic Chagas Disease include abnormal enlargement of the esophagus (megaesophagus) and colon (megacolon), and congestive heart failure.

About one-third of patients go on to develop digestive system damage, resulting in dilation of the digestive tract (megacolon and megaesophagus), accompanied by severe weight loss.

According to many specialists, this disorder has a guarded prognosis, however, since 2004 many owners have found a number of successful management techniques, one of which is vertical feeding (see "Bailey Chair megaesophagus").

Cardiospasm Dyssynergia Esophagus Esophageal Aperistalsis Megaesophagus None Achalasia is a rare disorder of the esophagus, the tube that carries food from the throat to the stomach.

Even though 40 years had passed since its discovery, little was known about the peculiar manifestations of the chronic phase of the disease, such as megaesophagus, megacolon, cardiomegaly, heart ventricular aneurysm, achalasia, etc., and the mechanism of the causation of these several pathologies.