Abstract
Endoscopic submucosal dissection (ESD) has been widely accepted as an endoscopic therapy for early gastric cancer (EGC), to obtain a precise pathological diagnosis and promising curability for EGC. Appropriately margining resection at will is one of distinctive features of ESD, therefore, the precise estimation for the lateral extent of the lesion has an important role in successful ESD. The aim of this study is to investigate the usefulness in delineating the lateral extent of EGC using narrow-band imaging (NBI) endoscopy with magnification.
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