Early cancer of the esophagus and stomach.
D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000473:pathology*; D004724:Endoscopy; D004938:Esophageal Neoplasms / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000473:pathology*