An unusual case of acute abdomen was caused by the inflammation of ectopic pancreatic tissue in a Meckel's diverticulum. A 49-year-old man presented with acute abdominal pain, and the clinical diagnosis of acute appendicitis was established. During laparotomy, a normal appendix of unusual localization near the gallbladder and a Meckel's diverticulum with an inflamed tip were found. Histological examination showed acute inflammation of heterotopic pancreatic tissue along with normal ectopic gastric and duodenal mucosa within the wall of the diverticulum. Fat necrosis was also ascertained. The authors believe that this is the first report of acute inflammation of ectopic pancreatic tissue and the presence of normal ectopic gastric and duodenal tissue in the same Meckel's diverticulum.
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