Efficacy of Delayed Coloanal Anastomosis for Medium and Lower Rectum Cancer Treatment. Phase 2 Clinical Trial (CASCADOR)

"2-stage pull-through colo-anal anastomosis without prophylactic derivation (2SCA) Whatever the mode of continuity restoration used, resection is the same in the two groups. It consists of total excision of the rectum and its mesorectum, that intervention should be performed by laparotomy or laparoscopy.~After surgical resection, the colon is exteriorized through the anus and attached to the buttock.~By day 6, exteriorized colon is resected and coloanal anastomosis is performed without preventive stoma derivation"

"After the surgical resection, coloanal anastomosis is performed usually after completion of a reservoir J when it is possible. Preventive ostomy is performed most often.~In the absence of fistula, the patient will reoperation for stoma closure of its branch"