Toddler with constipation

Surgical image of Hirschsprung disease
Surgical image shows decompressed small bowel (on the left) and an extremely dilated sigmoid colon which contained ganglion cells (in the upper middle) with a transition zone near the end of the sigmoid colon (on the right) and a narrowed rectosigmoid colon and rectum (in the lower middle) which turned out to be aganglionic.

The diagnosis was Hirschsprung disease.