IRCT20141218020364N12 IRCT 2019-05-25 Mazandaran University of Medical Sciences Different anastomosis procedures in rectal cancer Clinical outcomes of colonic J-pouch, straight colorectal and side-to-end anastomosis procedures in rectal cancer 2017-03-01 anticipated 60 Complete https://irct.ir/trial/39558 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: Simple randomization of individual by randomly drawing sealed envelopes, using a computer-based table of randomization by a surgical assistant, Blinding description: In this single-blind study, the participants were not familiar with three types of anastomosis surgery in this study. In addition, the observer, who completed the questionnaire, was not familiar with the groups. Similarly, the data analyzer did not know the study groups. However, the main researcher (surgeon) was informed about the groups, and all surgical procedures were performed by the same surgeon. The safety and data monitoring committee was also informed about the study groups. 3 Condition 1: Colon Cancer. Condition 2: Rectal Cancer. Intervention 1: Intervention group1: Coloanal End to End Anastomosis. Intervention 2: Intervention group 2: Side to End Anastomosis. Intervention 3: Intervention group 3: J poach coloanal anastomosis. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is not a plan to make this available