Abstract
A congenital duodenal diaphragm was encountered in an adult previously treated with gastroenterostomy for vascular compression of the duodenum. Impediment of a normal embryologic process results in the former lesion whereas the latter may arise secondarily as a result of debilitation. Survival into adulthood depends on the presence of a perforation within the diaphragm. The difficulties in establishing the correct diagnosis clinically, radiographically, and at exploration may lead to inadequate treatment. A duodenotomy with excision is the procedure of choice for duodenal diaphragm. A duodenojejunal bypass provides satisfactory treatment for vascular compression of the duodenum.
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