Gastrointestinal Tract

A to D, Meckel’s diverticulum that has undergone intussusception, as seen from the serosal side (A, B) and the mucosal side (C, D). Meckel's diverticulum


This is a Meckel's diverticulum from an adult that was excised because of blood loss from ulceration (a small red ulcer is seen. Meckel's diverticula may contain ectopic gastric mucosa (which can ulcerate surrounding mucosa with pain and bleeding) or ectopic pancreas (which is of no consequence unless it forms a mass large enough to predispose to intussusception). .
Meckel's diverticulum