Figure 1

Trial profile. Informed consent was obtained from 44 patients. Two patients withdrew informed consent before endoscopic resection. One patient did not have a target neoplasm that was defined in our clinical protocol. Therefore, the final number of patients who underwent endoscopic resection using 0.4% sodium hyaluronate (SH) was 41. In addition, regarding the histopathology of the multifragment resection, if the histopathological judgment was "vertical and lateral negative margins'', then resection was considered complete. *1: One patient met the exclusion criteria. *2: En bloc resection with histopathologically negative resection margin. *3: A patient had another neoplasm that was in need of treatment.