Duodenal duplication cysts: case report and review of the current literature.

Duodenal duplication cysts constitute a rare congenital anomaly of the gastrointestinal system, and a preoperative diagnosis of the condition is even less common. The authors present a case of a duodenal duplication cyst in a 3-year-old child in whom they were able to make the correct diagnosis preoperatively by means of ultrasonography and computed tomography.