Efficacy and long-term outcomes of abdominoperineal resection using transperineal total mesorectal excision approach for rectal cancer

Purpose

Although abdominoperineal resection (APR) is essential for a certain population of patients with low rectal cancer, it is technically difficult and sometimes contains oncological disadvantages. Thus, the use of the transperineal total mesorectal excision (TpTME) approach might overcome such concerns regarding APR.

Methods

In total, 27 patients who underwent conventional APR (conventional group) and 49 patients who underwent APR using the TpTME approach (TpTME group) for low rectal cancer were included. After propensity score matching, the outcomes of the 25 matched cases were compared between groups.

Results

The operative time was significantly shorter in the TpTME group than in the conventional group (452 vs. 565 min, P = 0.039). Intraoperative blood loss and transfusion rates were also significantly lower in the TpTME group than in the conventional group (25 mL vs. 200 mL, P < 0.001 and 0% vs. 28.0%, P = 0.015, respectively). Although the incidence of postoperative complications did not differ significantly, the postoperative hospital stay was significantly shorter in the TpTME group than in the conventional group (24 vs. 36 days, P = 0.001). The 5 year relapse-free survival rates in the TpTME and conventional groups were 62.0% and 57.6%, respectively (P = 0.648).

Conclusion

APR using the TpTME approach for the treatment of low rectal cancer is feasible and can achieve favorable oncological outcomes.