title: Duodenitis and gastritis that are merely associated with ulcer.
mesh_terms: D001706:Biopsy; D002908:Chronic Disease; D004378:Duodenal Diseases / Q000150:complications*; D004381:Duodenal Ulcer / Q000473:pathology; D005753:Gastric Mucosa / Q000473:pathology; D005756:Gastritis / Q000150:complications*; D005773:Gastroscopy; D005858:Germany; D006801:Humans; D007413:Intestinal Mucosa / Q000473:pathology; D010437:Peptic Ulcer / Q000150:complications* / Q000601:surgery; D012537:Scandinavian and Nordic Countries; D014481:United States