Megaesophagus

Megaesophagus is a disorder characterized by an enlarged and weakened esophagus, the muscular tube that carries food from the mouth to the stomach. In healthy pets, the esophagus uses wave-like contractions (peristalsis) to propel food. With megaesophagus, these contractions are absent or ineffective, leading to food accumulating in the esophagus instead of reaching the stomach. The most common and dangerous symptom is regurgitation – the passive expulsion of undigested food, often hours after eating. This is distinct from vomiting. A significant risk is aspiration pneumonia, occurring when regurgitated food or liquid is inhaled into the lungs. Treatment often involves managing the underlying cause if identified, feeding in an elevated position, and dietary adjustments to a gruel-like consistency.