School ager with abdominal pain and emesis

US of Meckel diverticulum — Transverse US of the abdomen (below) shows a non-peristalsing cystic lesion in the center of the image superiorly. Transverse US (above) shows a dilated loop of small bowel with an air-fluid level within it.

The diagnosis was Meckel diverticulum with a band of tissue coming off of it causing a small bowel volvulus and closed loop bowel obstruction resulting in small bowel ischemia.