Abstract
We report a case of duodenal enterolith associated with the surgical operation for annular pancreas, which was treated endoscopically using laser lithotolipsy. A 20-year-old Japanese man was admitted to Kawamura hospital with hematemesis. Upper gastrointestinal endoscopy and X-ray examination revealed a hemorrhagic duodenal ulcer and an enterolith in the duodenal bulb. Duodenal hemorrhage was successfully managed endoscopically. Then, we removed the enterolith with endoscopic laser lithotolipsy. The chemical analysis proved that the enterolith was made from 98% deoxycholic acid. Therefore, we diagnosed it as a true enterolith. Duodenal true enterolith is very rare disease. In this case, anastomotic stricture of the duodeno-duodenostomy for annular pancreas was considered to have caused the stagnation of intestinal contents and the formation of the enterolith.
