Early cancer of the esophagus: diagnosis and clinical evaluation.
D000328:Adult; D000368:Aged; D004724:Endoscopy; D004938:Esophageal Neoplasms / Q000175:diagnosis* / Q000401:mortality / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary; D013274:Stomach Neoplasms / Q000175:diagnosis