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Barrett's esophagus is a condition in which there is an abnormal (metaplastic) change in the mucosal cells lining the lower portion of the esophagus, from stratified squamous epithelium to simple columnar epithelium with interspersed goblet cells that are normally present only in the small intestine and large intestine.
People with Barrett's esophagus (a change in the cells lining the lower esophagus) are at much higher risk, [55] and may receive regular endoscopic screening for the early signs of cancer. [56] Because the benefit of screening for adenocarcinoma in people without symptoms is unclear, [ 2 ] it is not recommended in the United States. [ 1 ]
Chronic inflammation caused by H. pylori infection in the stomach and GERD in the esophagus are seen as the primary instigators of metaplasia and subsequent adenocarcinoma formation. Initially, the transformed epithelium resembles the small intestine lining; in the later stages it resembles the lining of the colon .
Some examples of this in practice are that if a patient whose endoscopy did not detect dysplasia on biopsy during screening for Barrett's esophagus, then research shows that there is little chance of any test detecting dysplasia for that patient within three years. [3] [4] [5]
Specialty professional organizations that specialize in digestive problems advise that many patients with Barrett's esophagus receive endoscopies too frequently. [7] Such societies recommend that patients with Barrett's esophagus and no cancer symptoms after two biopsies receive biopsies as indicated and no more often than the recommended rate ...
A condition in which the lining of the esophagus changes to look more like the lining of the intestine and increases the risk of developing esophageal cancer. [22] There are no specific symptoms although symptoms of GERD may be present for years prior as it is associated with a 10–15% risk of Barrett's esophagus. [22]
Reflect the stage of cancer; By determining the stage of cancer, it's possible to give a prognosis and treatment plan. [3] Screening for cancers; No screening test is wholly specific, and a high level of tumor marker can still be found in benign tumors. The only tumor marker currently used in screening is PSA (prostate-specific antigen ...
Special Research Programs" falling under the aegis of the DCB include: Physical Sciences-Oncology Network, Cancer Systems Biology Consortium, Oncology Models Forum, Barrett's Esophagus Translational Research Network, New Approaches to Synthetic Lethality for Mutant KRAS-Dependent Cancers, Molecular and Cellular Characterization of Screen ...