Double channel pylorus

Radiographic and clinical features in five patients with the double channel pylorus deformity are reviewed and compared with previously reported cases. The double channel pylorus is a form of gastroduodenal fistula with a characteristic radiographic appearance. An accessory channel connects the lesser curvature of the prepyloric antrum with the duodenal bulb. A peptic ulcer lies in or immediately adjacent to the accessory channel in almost all cases. The double channel pylorus appears to be an acquired form of peptic deformity in the great majority of cases and is probably more common than the number of reported cases would imply.
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