Esophageal duplication cyst presenting with stridor in a child with congenital pulmonary airway malformation: A case report and literature review.

Rationale: Esophageal duplication cyst (EDC) is a rare developmental aberration originated from the embryonic foregut. It may remain asymptomatic but produce local mass effect on surrounding organs if rapid enlarges. EDC may sometimes accompany with other congenital malformations.