Abstract
Double pylorus is one of the rare gastrointestinal abnormalities, having a second channel between the antrum of the stomach and the duodenal bulb in addition to the true pyloric channel. Recently we experienced a case of double pylorus which seems to be an acquired origin on the occasion of healing process of gastro-duodenal ulcer. A 70-year-old man came to our hospital complaining of epigastric pain. The first endoscopic examination showed gastro-duodenal ulcer. Six weeks later at the second endoscopic examination, this lesion was found to develope the double pylorus. X-ray examination of the upper gastrointestinal tract also revealed a gastro-duodenal fistula communicating between the lesser curvature of the prepyloric region and the duodenal bulb. In addition, we reviewed 54 cases of double pylorus reported in the literature in Japan.
