Pyloric regurgitation and gastric ulcer.

Using a radiological test for pyloric regurgitation described by Capper, Airth, and Kilby (1966), it was confirmed that the pylorus is normally competent but incompetent in gastric ulcer and chronic alcoholic gastritis and often incompetent in chronic duodenal ulcer. The significance of pyloric regurgitation in the aetiology of gastric ulcer is discussed.