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Section: Information In-depth
Because the history, physical examination findings and overall presentation of animals with megaesophagus are variable, there are other illnesses that must be ruled out when establishing a definitive diagnosis. It is important to note that regurgitation, which is the effortless evacuation of fluid, mucus, and undigested food from the esophagus, is the most common clinical sign associated with megaesophagus. Regurgitation must be differentiated from vomiting, which is the forceful evacuation of digested food from the stomach. The following are often associated with regurgitation:
Unlike vomiting, regurgitation is not accompanied by nausea and does not involve forceful abdominal contractions. It is a symptom of esophageal disease and not a disorder in itself.
The esophagus is the tubular, muscular organ that extends from the pharynx to the stomach and functions to transmit ingested material to the stomach. Esophageal disease is any disease that effects the...
Esophagitis is an inflammation of the esophagus that can occur from a variety of causes. Frequent vomiting, reflux of gastric juices or ingestion of corrosive chemicals are the most common causes.
A hiatal hernia is the protrusion of abdominal contents into the chest cavity through the esophageal hiatus, which is the natural opening in the diaphragm for the passage of the esophagus. These hernias...
Myasthenia gravis is a disorder characterized by muscular weakness that is aggravated by activity and relieved by rest. It is caused by an impairment of transmission of nerve impulses to the muscles, which...
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