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Meta-Analysis
. 2022 Jun;74(3):833-842.
doi: 10.1007/s13304-022-01276-8. Epub 2022 Mar 18.

Safety and oncological outcomes of natural orifice specimen extraction surgery compared with conventional laparoscopic surgery for right hemicolectomy: a systematic review and meta-analysis

Kang Wang  1   2   3 , Wenya Li  1   2   3 , Ningquan Liu  1   2   3 , Jianchun Cai  4   5   6 , Yiyao Zhang  7   8   9
Affiliations
Meta-Analysis

Safety and oncological outcomes of natural orifice specimen extraction surgery compared with conventional laparoscopic surgery for right hemicolectomy: a systematic review and meta-analysis

Kang Wang et al. Updates Surg. 2022 Jun.

Abstract

Natural orifice specimen extraction surgery (NOSES) is a new technique and uses natural orifice as the delivery route for specimen extraction to avoid supererogatory incision, and the safety and oncological outcomes of NOSES for right hemicolectomy are still inconclusive, so a meta-analysis was performed to compare these to conventional laparoscopic surgery (CLS). Related literature comparing NOSES with CLS for right hemicolectomy, whether randomized controlled trials (RCTs) or retrospective studies, were systematically searched. A random-effect model or fixed-effect model was used based on the I2 value. A total of six studies (all retrospective trials) involving 609 participants were included. Compared with CLS, NOSES was more preponderant than CLS in terms of surgical morbidity [odds ratio (OR) = 0.31; P = 0.0002], length of hospital stay [weighted mean difference (WMD) = - 1.52; P = 0.006], time to first flatus (WMD = - 0.82; P = 0.0008) and liquid intake (WMD = - 1.40; P < 0.00001), pain score of POD1 (WMD = - 1.99; P < 0.00001) and POD3 (WMD = - 1.15; P = 0.02), and cosmetic result (WMD = 1.84; P < 0.00001), while operative time of NOSES was prolonged (WMD = 18.29; P = 0.04). The number of dissected lymph nodes, recurrence, and 3-year overall survival (3-year OS) in NOSES group were comparable to the CLS group. Despite the lack of enough evidence, NOSES for right hemicolectomy has demonstrated comparable safety and oncological outcomes as CLS with less postoperative morbidity and pain, better cosmetic effect, and rapider recovery.

Keywords: Conventional laparoscopy surgery; Meta-analysis; Natural orifice specimen extraction surgery; Right hemicolectomy.

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