Intraoperative localization of ectopic gastric mucosa in the nonduplicated intestinal lumen with technetium 99m pertechnetate scanning.

The occurrence of ectopic gastric mucosa in Meckel's diverticula and duplications of the intestinal tract is a source of serious morbidity from bleeding and perforation in children. Intraoperative localization of the ectopic mucosa is aided by its occurrence in the duplicated intestinal segment or Meckel's diverticulum. However, its identification in the nonduplicated intestine poses problems for the surgeon faced with removal of the affected segment. The authors present a case of ectopic gastric mucosa in a nonduplicated jejunal segment and discuss the use of technetium 99m pertechnetate scanning in its localization.