Transverse colon duplication with chronic constipation in adult.

Gastrointestinal duplications are extremely rare congenital abnormalities having definite difficulties to be diagnosed preoperatively. Most of them are presented at the oesophagus and ileum and only involve colon from 4% to 18%. We illustrate a case report of an 18-year-old female patient with transverse colon duplication. There were symptom manifestations such as chronic constipation with flatulence accompanied with abdominal pain. We demonstrate this case report due to non-specific clinical presentation and some difficulties to form preoperative diagnosis. The patient underwent surgery. Tubular transverse colon duplication communicated with normal bowel in the proximal part was revealed. We performed transverse colon resection with duplication. The postoperative period was uneventful.