Transanal Tube Drainage in Endoscopic Submucosal Dissection of the Colorectal Tumor

Transanal Tube Drainage in Endoscopic Submucosal Dissection of the Colorectal Tumor: A Prospective, Multi-Center, Randomized, Open-Label, Parallel Group, Superiority Clinical Trial

We design the clincal trial to investigate the efficacy of transanal tube drainage in colorectal ESD.

Endoscopic submucosal dissection (ESD) is a technique for endoscopic tissue resection that enables endoscopists to control the depth and direction of diathermic knife incisions.Recently, the number of reports in which ESD has been successfully used to treat colorectal tumors has increased. But the complatios with colorectal ESD were higher than esophagus and stomach ESD.We design the clincal trial to investigate the efficacy of transanal tube drainage in colorectal ESD.

Inclusion Criteria:

• Endoscopy proven colorectal polyp>2cm, LST>3cm, SMTs<2cm Suitable for ESD No other organic disease of colorectal Removing a single lesion one time Informed consent

Exclusion Criteria:

• Complicated other colorectal diseases, such as,Crohn's disease Familial adenomatous polyposis With previous colorectal surgery Pregnancy or lactation Absolute contraindications to general anesthesia or prolonged pneumoperitoneum (ASA class > III) ESD conversion to laparotomy Patients cannot receive ESD Patients and/or family members can not understand and accept this study