PMC:6736480 / 6483-7329 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/6736480","sourcedb":"PMC","sourceid":"6736480","source_url":"https://www.ncbi.nlm.nih.gov/pmc/6736480","text":"All endoscopic procedures were performed by gastrointestinal endoscopists with more than 5 years’ experience. A pre-CRT endoscopy, accompanied by tissue biopsy, was performed before initiating preoperative CRT. Four weeks after the completion of preoperative CRT, endoscopic tumor response was evaluated prior to surgery (Fig. 1). All reviewers were blinded for histology and each other's results. Under same categorical criteria, all reviewers conducted reassessment of tumor response considering the tumor size, morphology, and involved intraluminal circumference before surgery. Endoscopic tumor response was categorized as follows: cCR, no visualization of tumor, white or red scar; nearly-cCR, minimal residual nodularity or stenosis; non-cCR, any ulcer with a necrotic bed regardless size, a definite residual mass, or nodularity (Fig. 2A).","tracks":[]}