Acute attack of recurrent esophageal duplication cyst in an adult: case report and literature review.

Esophageal duplication cyst (EDC) is an uncommon, usually asymptomatic congenital benign esophageal tumor that was first described by Blassium in 1711 (1). The etiology of EDC is a failure of vacuolization in the primitive foregut during the fourth to eighth week of embryonic development (2).