Toddler with abdominal pain for 4 days and now with feculent vomiting

Surgical image of Meckel diverticulum causing ileocolic intussusception
Surgical image (above) shows an ileocolic intussusception which upon reduction is seen to be caused by a Meckel diverticulum (below in center of image with forceps pointing to it) on the antimesenteric border of the small bowel.

The diagnosis was ileocolic intussusception due to Meckel diverticulum.