The cause of the stenosis may be mechanical, such as a stricture, or functional, such as lower esophageal sphincter achalasia or asynchrony, either.
Potential causes of stricture include traumatic, such as foreign bodies or chemical irritation, and congenital. Esophageal dysmotility disorders overall are lower for potential as the position of the obstruction cranial to the diaphragm does not match the regular anatomy.
The generalized esophageal dysmotility likely is a late sequela to the chronic dilation and may be irreversible. The prognosis is guarded.
Endoscopy was recommended to plan therapeutic approach such as interventional balloon dilation or surgery.