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lüll Endoscopic treatment of Barrett s esophagus: From metaplasia to intramucosal carcinoma Chennat J; Waxman IWorld J Gastroenterol 2010[Aug]; 16 (30): 3780-5The annual incidence of adenocarcinoma arising from Barrett's esophagus (BE) is approximately 0.5%. Through a process of gradual transformation from low-grade dysplasia to high-grade dysplasia (HGD), adenocarcinoma can develop in the setting of BE. The clinical importance of appropriate identification and treatment of BE in its various stages, from intestinal metaplasia to intramucosal carcinoma (IMC) hinges on the dramatically different prognostic status between early neoplasia and more advanced stages. Once a patient has symptoms of adenocarcinoma, there is usually locally advanced disease with an approximate 5-year survival rate of about 20%. Esophagectomy has been the gold standard treatment for BE with HGD, due to the suspected risk of harboring occult invasive carcinoma, which was traditionally estimated to be as high as 40%. In recent years, the paradigm of BE early neoplasia management has recently evolved, and endoscopic therapies (endoscopic mucosal resection, radiofrequency ablation, and cryotherapy) have entered the clinical forefront as acceptable non-surgical alternatives for HGD and IMC. The goal of endoscopic therapy for HGD or IMC is to ablate all BE epithelium (both dysplastic and non-dysplastic) due to risk of synchronous/metachronous lesion development in the remaining BE segment.|*Esophagoscopy/methods[MESH]|Adenocarcinoma/pathology/*surgery[MESH]|Barrett Esophagus/pathology/*surgery[MESH]|Catheter Ablation[MESH]|Cryosurgery[MESH]|Disease Progression[MESH]|Esophageal Neoplasms/pathology/*surgery[MESH]|Esophagus/pathology/*surgery[MESH]|Humans[MESH]|Metaplasia[MESH]|Mucous Membrane/pathology/surgery[MESH]|Photochemotherapy[MESH]|Precancerous Conditions/pathology/*surgery[MESH]|Treatment Outcome[MESH] |