A rare cause of wheezing in an infant: Esophageal duplication cyst

Esophageal duplication cyst (EDC) is classified as a subgroup of foregut duplication cyst. They are very rare and predominantly detected in children. We present an unusual cause of wheezing in a 2-month-old infant. The diagnosis of EDC was suspected by bronchoscopy, provisionally confirmed by magnetic resonance imaging, and followed by successful surgical excision of the cyst. We conclude that foregut duplication cyst of the esophagus is very rare, and must be considered in the differential diagnosis of persistent wheezing in infants who do not respond to conventional treatment.