Recent traction methods for endoscopic submucosal dissection

Table 2 Traction method based on the anatomical site

	Head and neck	Esophagus	Stomach	Colon and rectum
Clip with line method	No report, but theoretically possible	Very useful	Useful, especially in the greater curvature of gastric body	Modified method is useful in any colon
External forceps method	Useful	Useful	Difficult in the cardia and the lesser curvature of upper gastric body	Rectum only
Clip and snare methods using prelooping technique	No report, but theoretically possible	No report, but theoretically possible	Useful	Useful, but requires overtube in deep colon
Internal traction method	No report	No report	Difficult in the pylorus and the cardia	Useful
Double scope method	No report, but theoretically possible	No report	Useful	Rectum only