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Laparoscopic Versus Open Extralevaor Abdominoperineal Excision for Lower Rectal Cancer: A Retrospective Cohort Study in Single Institute.

Background: To explore the safety and efficacy of laparoscopic extralevator abdominoperineal excision (La-ELAPE) and open extralevator abdominoperineal excision (Op-ELAPE) for patients with lower rectal cancer. Materials and Methods: Consecutive 101 patients with lower rectal cancer who underwent La-ELAPE or Op-ELAPE in our institution from January 2014 and May 2018 were analyzed retrospectively. The patients' clinicopathological data and postoperative outcomes were compared between the two groups. Results: A total of 101 patients were enrolled in the study, 43 (42.6%) patients successfully underwent La-ELAPE and 58 (57.4%) Op-ELAPE. The Op-ELAPE group had more intraoperative blood loss (P = .03), and longer postoperative hospital stay (P = .01) compared with the La-ELAPE group. There were no significant differences between the two group in terms of the operation time (P = .08), circumferential resection margin positivity (P = 1.00), intraoperative perforation (P = .73), and number of positive lymph nodes (P = .91). There were no significant differences in postoperative complications such as colostomy-associated issues (P = .79), intestinal obstruction (P = 1.00), urinary retention (P = 1.00), perineal wound complications (P = .64), and chronic perineal pain (P = .70) between the two groups. According to the Kaplan-Meier survival analysis and log rank test, the overall survival rate and progression-free survival rate between the two groups also showed no significant difference. Conclusion: This study showed that La-ELAPE significantly reduced the intraoperative blood loss and the postoperative hospital stay without increasing postoperative morbidity for patients with lower rectal cancer when compared with Op-ELAPE. It suggests that La-ELAPE is safe and effective for patients with lower rectal cancer. For the experienced endoscopic surgeons, the La-ELAPE might be an alternative surgical treatment.