title: Erosive prepyloric changes (EPC)--a new entity.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002927:Cimetidine / Q000627:therapeutic use; D004311:Double-Blind Method; D004415:Dyspepsia / Q000473:pathology*; D005744:Gastric Acid / Q000378:metabolism; D005756:Gastritis / Q000473:pathology*; D005773:Gastroscopy; D006801:Humans; D008875:Middle Aged; D010437:Peptic Ulcer / Q000473:pathology; D011708:Pylorus / Q000473:pathology*
chemical_list: D002927:Cimetidine