Adult intussusception is a rare entity which constitutes 5-10% of all intussusceptions. In adults 90% have a cause for intussusception which is usually a polyp, adenoma, adhesion, hamartoma or tumour as lead point. Rarely described lead point is heterotopic pancreatic tissue with lipoma. Hereby reporting 32 year old male presented with abdominal pain, melaena and vomiting for 1 week. His CT abdomen showed submucosal lipoma causing ileoileal intussusception. He underwent ileal resection and anastamosis. Histopathology of the specimen showed heterotopic pancreatic tissue with lipoma as lead point. A comprehensive review on intussusception in adults is attempted.