Clinical and functional results of laparoscopic intersphincteric resection for ultralow rectal cancer: is there a distinction between the three types of hand-sewn colo-anal anastomosis?

Purpose The purpose of this study is to compare the clinical and functional outcomes of three types of hand-sewn colo-anal anastomosis (CAA) after laparoscopic intersphincteric resection (Lap-ISR) for patients with ultralow rectal cancer.