Intussusception of invaginated Meckel's diverticulum.

Two middle-aged patients are reported who came to laparotomy with a presumptive diagnosis of small bowel tumour. There was no overt evidence of small bowel obstruction in either case. They were found at laparotomy to have intussusception of an invaginated Meckel's diverticulum. This condition should be considered in the differential diagnosis of ileal tumours.