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We report the case of a 72-year-old man who underwent surgery for a jejunal intussusception caused by an infarcted mass on the antimesenteric surface of the small bowel approximately 90 cm from the duodenojejunal flexure. The specimen was reported as an infarcted diverticulum containing heterotopic pancreatic mucosa in keeping with infarcted Meckel's diverticulum. We initially wished to establish when the term "Meckel's diverticulum" should be used. The anatomical site in the present case argues against this being a Meckel's diverticulum, a remnant from the mid-gut loop. Non-Meckelian diverticula are usually acquired and often multiple and generally occur on the mesenteric border of the bowel. It is rare for them to contain ectopic mucosa. The diverticulum in our patient thus has features which suggest it may have been congenital. We believe our patient had a rare occurrence of a congenital, but non-Meckelian, diverticulum with associated ectopic epithelium.
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