School ager with massive lower GI bleeding

CT of Meckel diverticulum
AP and lateral images from a Technetium-99m Meckel scan (above left) show no areas of abnormal uptake of radiotracer in the abodmen. Axial CT with contrast of the abdomen (above right) shows a small, round, primarily solid soft tissue mass just to the right of the midline between the loops of bowel that on coronal (below left) and sagittal (below right) images is seen to be tubular in appearance and connecting to the anterior abdominal wall near the umbilicus.

The diagnosis was Meckel diverticulum.