Endoscopic Ultrasound Guided Colorectal ESD and Traditional Colorectal ESD Surgery

A Prospective Randomized Controlled Study Protocol Between Endoscopic Ultrasound Guided Colorectal ESD and Traditional Colorectal ESD Surgery

A prospective randomized controlled study protocol between endoscopic ultrasound guided colorectal ESD and traditional colorectal ESD surgery

This study compare and analyze the efficiency of endoscopic ultrasound guided colorectal ESD surgery with traditional colorectal ESD surgery, in order to guide colorectal ESD operations.

Inclusion Criteria:

• Cases in our hospital who require colorectal ESD surgery
• Colorectal lesions（laterally spreading tumor）.

Exclusion Criteria:

• Laterally spreading tumor but not nodular mixed type(LST-G-M)
• Patients who have participated or are currently participating in other clinical trials within the first 4 weeks of enrollment;