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. The patient underwent diagnostic laparoscopy and was found to have a caecal duplication cyst acting as a lead point for the intusseception for which laparoscopic-assisted resection was performed. The histological examination confirmed the presence of intestinal duplication cyst without any underlying malignancy. © BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.