Barrett's esophagus and multiple malignancies.
D000230:Adenocarcinoma / Q000150:complications*; D001471:Barrett Esophagus / Q000150:complications*; D004935:Esophageal Diseases / Q000150:complications*; D004938:Esophageal Neoplasms / Q000150:complications*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000473:pathology*