Assertion: duodenal ulcer | /r/Causes | melena
Facets:
value: in the stool
type: LOCATION
Source sentences:
text: Stomach pain in duodenal ulcers can be relieved by eating.4.Gastric ulcers cause hematemesis or vomiting of blood while duodenal ulcers cause melena or blood in the stool.5.A gastric ulcer has a special diet while duodenal ulcers do not.
text: Gastric ulcers cause hematemesis or vomiting of blood while duodenal ulcers cause melena or blood in the stool.