Barrett's Esophagus (cont.)
In this Article
- What is Barrett's esophagus?
- Why is there so much interest in Barrett's esophagus?
- What causes Barrett's esophagus?
- Who develops Barrett's esophagus?
- What is the specific abnormality in the inner lining (epithelium) of Barrett's esophagus?
- What about the cancer that occurs in Barrett's esophagus?
- What is dysplasia in Barrett's esophagus?
- What is the risk of developing adenocarcinoma of the esophagus in Barrett's?
- What are the symptoms of Barrett's esophagus?
- How is GERD with or without Barrett's esophagus treated?
- Why is it important to screen patients with GERD to diagnose Barrett's esophagus?
- Why is it critical to be accurate in the diagnosis of Barrett's esophagus?
- What does endoscopic biopsy surveillance in Barrett's esophagus involve?
- How is high grade dysplasia managed?
- How is low grade dysplasia managed?
- What are the experimental approaches for treatment of high grade dysplasia?
- What experimental options are there for Barrett's esophagus WITHOUT dysplasia?
- What does the future hold for Barrett's esophagus?
- Barrett's Esophagus At A Glance
- Find a local Gastroenterologist in your town
What experimental options are there for Barrett's esophagus WITHOUT dysplasia?
In an ideal world, all Barrett's esophagus, with or without dysplasia, would be ablated for life. Thereby, both Barrett's and its attendant risk of cancer would be eliminated. Experimental ablation (as described above for dysplasia) is being evaluated in Barrett's without dysplasia. However, long-term studies are needed to prove the durability of the ablation (for example, with antireflux surgery or acid-suppressing drugs).
Barrett's mucosa without dysplasia can be destroyed by using argon plasma coagulation and multipolar electrocoagulation techniques. (As already mentioned, the more powerful PDT has been used most commonly for high grade dysplasia and cancer.) To prevent recurrence of Barrett's after ablation, however, requires the elimination of reflux for life, either with high dose acid suppressing drugs or anti-reflux surgery (fundoplication).
After an ablation procedure, the normal squamous lining in the esophagus grows back. Sometimes, however, after ablation therapy, the residual Barrett's mucosa remains under the new lining. The outcome and importance of this subterranean Barrett's is not known. It should be stressed that ablation therapy is experimental and should be restricted to formal studies.
What does the future hold for Barrett's esophagus?
Most of the future developments in the field of Barrett's esophagus will depend on the results of research studies. The goals of such studies would be to:
- Standardize the diagnosis of Barrett's, especially to
- Standardize how surveillance biopsies are done so
that we can "do it right and do it less often," and devote more resources to
the next step, which is screening.
- Develop strategies for determining whom to screen and
when to screen for the presence of Barrett's esophagus among patients with
chronic GERD. At present, most GERD patients with adenocarcinoma of the esophagus have never had an endoscopy to determine whether they had Barrett's esophagus.
- Look for biomarkers (molecular tests on tissues or in
blood) that are able to separate (stratify) patients with the highest risk of cancer in those who would need closer follow-up than the majority of Barrett's patients who do not.
- Evaluate the effectiveness and safety of the
techniques for ablation and endoscopic mucosal resection (EMR) of Barrett's
with and without dysplasia, and carry out long term follow-up studies to
determine whether cancer is prevented.
- Evaluate better techniques for targeting biopsies to
areas of dysplasia in order to avoid the currently used method of taking random
- Evaluate better techniques for staging early cancer with refinements of endoscopic ultrasound and other imaging techniques.
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