NCIt synonyms : Esophagus Adenocarcinoma; Adenocarcinoma of Esophagus;
NCIt related terms : Adenocarcinoma; Adenocarcinoma of the esophagus; Adenocarcinoma - esophagus;
NCIt definition : A malignant tumor with glandular differentiation arising predominantly from Barrett
mucosa in the lower third of the esophagus. Rare examples of esophageal adenocarcinoma
deriving from ectopic gastric mucosa in the upper esophagus have also been reported.
Grossly, esophageal adenocarcinomas are similar to esophageal squamous cell carcinomas.
Microscopically, adenocarcinomas arising in the setting of Barrett esophagus are typically
papillary and/or tubular. The prognosis is poor.;