Management of premalignant esophagogastric lesions.
D004931:Esophageal Achalasia / Q000150:complications; D004938:Esophageal Neoplasms / Q000175:diagnosis*; D005757:Gastritis, Atrophic / Q000150:complications; D006801:Humans; D011230:Precancerous Conditions / Q000175:diagnosis*; D013274:Stomach Neoplasms / Q000175:diagnosis*