[Gastroscopy in the diagnosis of chronic gastritis, gastric ulcer and gastric polyposis].
D018256:Adenomatous Polyps; D005756:Gastritis; D005773:Gastroscopy; D006801:Humans; D011127:Polyps; D013274:Stomach Neoplasms; D013276:Stomach Ulcer
GASTRITIS; GASTROSCOPY; POLYPI; STOMACH NEOPLASMS; STOMACH ULCER