Mucosa-associated lymphoid tissue (MALT) in Barrett's esophagus: prospective evaluation and association with gastric MALT, MALT lymphoma, and Helicobacter pylori.

Objectives: Prospective evaluation of the prevalence of mucosa-associated lymphoid tissue (MALT) within Barrett's esophagus and its association with gastric MALT, gastric MALT lymphoma, and H. pylori infection.

Methods: From Barrett's esophagus patients, a minimum of six gastric biopsies were obtained, in addition to Barrett's surveillance biopsies.