Adenocarcinoma arising in Barrett's esophagus.
D000230:Adenocarcinoma / Q000473:pathology*; D001471:Barrett Esophagus / Q000473:pathology*; D004935:Esophageal Diseases / Q000473:pathology*; D004938:Esophageal Neoplasms / Q000473:pathology*; D004947:Esophagus / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged