Small-bowel obstruction caused by heterotopic pancreas in an adult.

Aberrant pancreatic tissue has been found in several abdominal and intrathoracic locations, most frequently in the stomach or duodenum. Heterotopic pancreas in the jejunum or ileum is a rare, usually asymptomatic, incidental finding. A review of the English language literature since 1950 shows only one pediatric and one adult case of heterotopic pancreas causing small bowel intussusception. The authors report a case of ileo-ileal intussusception caused by a submucosal mass of aberrant pancreatic tissue that remained undetected during several diagnostic tests and two laparotomies.