Precursors of gastric and esophageal cancer.
D002278:Carcinoma in Situ / Q000473:pathology; D004938:Esophageal Neoplasms / Q000209:etiology / Q000473:pathology*; D004941:Esophagitis / Q000150:complications; D006801:Humans; D010212:Papilloma / Q000473:pathology; D011230:Precancerous Conditions / Q000473:pathology*; D013274:Stomach Neoplasms / Q000209:etiology / Q000473:pathology*