The retained gastric antrum. A case report.

A case of retained gastric antrum, confirmed by radiographic and isotopic techniques, is presented. Any patient with chronic, recurrent peptic ulceration following subtotal gastric resection and gastrojejunostomy should have an adequate upper gastrointestinal series with filling of the afferent loop. In addition, intravenous injection of 99mTc pertechnetate is a noninvasive technique which aids in the identification of a retained gastric antrum.