Robotic surgery, Colorectal surgery, Rectal cancer surgery, Flexible sigmoidoscopy, Colectomy, Rectal prolapse surgery,... Proctectomy, Intraoperative radiation therapy, Colostomy, Ileoanal anastomosis surgery, Colon cancer surgery, Coloanal anastomosis, Anorectal surgery, Laparoscopic surgery, Ileostomy surgery, Transanal endoscopic microsurgery, Minimally invasive abdominal surgery, Complex oncologic multidisciplinary pelvic surgery, Colon cancer, Polyp, Crohn's disease, Inflammatory bowel disease, Ulcerative colitis, Lynch syndrome, Anal cancer, Colon polyps, Rectal cancer, Carcinoid tumor, Diverticulitis, Abscess, Rectal prolapse, Familial adenomatous polyposis, Vaginal fistula, Recurrent cancer, Polyposis syndromes