Table 1.

Problems during ESD using conventional knives and proposed measures

Problems	Proposed measures
Unintentional incision	Device fixation to the targeted tissue
	Outside insulation
Perforation	Sufficient submucosal injection
	Outside insulation
	Lift up the targeted tissue by device
	Good visualization of the targeted area
Bleeding	Compression of the blood vessel by device

ESD: Endoscopic submucosal dissection.