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Endoscopic submucosal dissection (ESD) has gradually gained acceptance as one of the standard treatments for early esophageal cancer, as well as for early gastric cancer in Japan, but standardization of the knowledge is still incomplete. The final goal to perform ESD is not to resect the lesion in an en bloc fashion, but to save the patient from esophageal cancer-related death. Thus, the indications should be considered based on the entire patient, not just the target lesion itself, and pre-, peri-and postoperative management of the patient is also very important, as well as technical aspects of ESD. In terms of the techniques of ESD, owing to refinement of the procedural strategy, invention of the devices, and the learning curve, acceptable safety and favorable middle-term efficacy have been obtained. We believe that ESD will become a standard treatment for early esophageal cancer not only in Japan but also worldwide in the near future.

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