Isolated enteric duplication cyst with respiratory epithelium: case report and review of the literature.

Enteric duplication cysts are uncommon congenital abnormalities. We report a case of an enteric cyst duplication located a few centimeters proximal to the ileocecal valve in a patient with vague abdominal symptoms. Histological examination showed an ileal duplication cyst lined with ciliated bronchial epithelium. Duplication cysts of the alimentary tract are uncommon, and their epithelial lining varies. Bronchial respiratory epithelium is extremely rare at the terminal ileum. Our case is only the second case described in the literature.