ecrin-mdr-crcClinical2021Colorectal tumorColorectal TumorInterventionalhttps://newmdr.ecrin.org/Study/2729452China10ECRIN MDRRecruitingfalseClinical study of the effects of natural cavity (rectum) to the anal function after laparoscopic adductation of ethyl colon cancer / high rectal cancer: a single center, single arm clinical researchInterventions: experimental group:specimens taken via natural cavity (rectum) Primary outcome(s): Anal function Study Design: Single arm2021-10-152729452ChiCTR2100050614