Tumorous Heterotopic Gastric Mucosa in the Small Intestine

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Abstract
Tumorous heterotopic (ectopic, aberrant) gastric mucosa in the small bowel, other than in the Meckel's diverticulum or other congenitally anomalous bowel, is exceedingly rare. Fourteen cases have been recorded in the literature (Table). Two recent experiences at the Mary Hitchcock Memorial Hospital with tumors of the small intestine due to heterotopic gastric mucosa are reported below, followed by a review of the literature on this subject. Report of Cases Case 1.—A 25-year-old man had been healthy until three weeks prior to admission when he experienced recurring intermittent midabdominal crampy pain and two-hour postprandial vomiting. There was no hematemesis or rectal bleeding. Physical examination results were unremarkable, except for slight tenderness over the right periumbilical area without rebound or spasm. Radiographic examination of the upper gastrointestinal tract showed a slightly dilated proximal jejunum with an intussuscepting pedunculated polypoid tumor in this segment of bowel (Fig 1). At operation intussusception was not

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