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IMPACT OF ULTRASONOGRAPHY ON DIAGNOSIS OF T1 ESOPHAGEAL CANCER AS A CANDIDATE FOR ENDOSCOPIC MUCOSAL RESECTION

To get the correction information to decide whether endoscopic mucosal resection (EMR) or endoscopic submucosal dissection (ESD) should be performed, endoscopic examinations, including multiple modalities such as chromoendoscopy, magnifying endoscopy and ultrasonography, are routinely performed in one or two sessions of endoscopic examination. Ultrasonography provides a cross sectional view of the tumor, which is useful information in the decision between EMR or surgery. The final treatment strategy should be decided according to the histological analysis of the resected specimen.