[Jejunal small intestine duplication].

Duplications of the alimentary tract are rare. Most of them are diagnosed during infancy or childhood, when they become symptomatic and a palpable mass is found. Major complications are bleeding, perforation, ileus and pancreatitis. In the majority of cases the gastro-intestinal duplication is localized in the small bowel. Correct preoperative diagnosis by means of imaging techniques is rare. Because there is no malignancy surgery is only necessary in symptomatic cases.