Caecal duplication cyst leading to intussusception in an adult.

Colonic duplication cyst is an uncommon cause of intussusception in adults. We report a case of caecal duplication cyst in a 24-year-old adult with a 3-year history of recurrent abdominal pain mainly in the periumbilical region. CT and MRI of the abdomen showed a lesion suggesting an caecal duplication cyst within an intussuception.