Abstract
A patient with an esophageal duplication cyst who presented with dysphagia is described
here. The diagnosis was accurately made preoperatively by endosonography due to the
demonstration of contiguity of the muscularis propria of the esophagus with the muscle
layer of the cyst wall. Endoscopic ultrasound is the most reliable non-surgical method
for the diagnosis of this lesion, assisting in surgical planning in symptomatic patients
and observation in asymptomatic ones.
