Duplication cyst of the jejunum. Report of a case.

A 4-year-old boy presented with recurrent abdominal pain and melena. X-ray studies of the gastrointestinal tract and technetium scanning of the abdomen were normal. Laparotomy revealed a large duplication cyst in the proximal part of the jejunum. The cyst was intramesenteric and contained gastric mucosa with three peptic ulcers. The cyst was removed without bowel resection.