“…Approximately 60% of Meckel’s diverticula contain heterotopic mucosa, of which over 60% consist of gastric mucosa [1]. Other heterotopic tissues include pancreatic tissue, which is found in 6% of cases, jejunal, duodenal mucosa or Brunner’s glands, with every one of this type found in 2% of cases, and pancreatic islets, colonic mucosa, endometriosis and hepatobiliary tissue, which are found in smaller percentages [2]. A commonly quoted ‘rule of twos’ also applies: 2% of the population have the anomaly, it is approximately 2 inches in length, it is usually found within 2 feet proximal to the ileocecal valve, it is often found in children under two years of age, it contains two types of common ectopic tissue (gastric and pancreatic) and it affects males twice as often as females [3].…”