A Case of Dysphagia due to an Esophageal Duplication Cyst in a Difficult Anatomical Site: A Challenging Situation for Endoscopic Treatment

Esophageal duplication cyst is a rare congenital cyst that results from aberration of the posterior division of the embryonic foregut at the fourth to eighth week of gestation. Most of these cysts become symptomatic in childhood, whereas in adults they are usually an asymptomatic incidental radiographic or endoscopic finding. They may cause symptoms due to compression, rupture and inflammation of the esophagus or the respiratory system and require intervention and treatment when being symptomatic.