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. 2022 Feb;407(1):75-86.
doi: 10.1007/s00423-021-02411-6. Epub 2022 Jan 30.

Techniques for reconstruction after distal gastrectomy for cancer: updated network meta-analysis of randomized controlled trials

Francesca Lombardo  1 , Alberto Aiolfi  2 , Marta Cavalli  1 , Emanuele Mini  1 , Caterina Lastraioli  1 , Valerio Panizzo  1 , Alessio Lanzaro  1 , Gianluca Bonitta  1 , Piergiorgio Danelli  3 , Giampiero Campanelli  1 , Davide Bona  1
Affiliations

Techniques for reconstruction after distal gastrectomy for cancer: updated network meta-analysis of randomized controlled trials

Francesca Lombardo et al. Langenbecks Arch Surg. 2022 Feb.

Abstract

Background: The choice of the best reconstruction technique after distal gastrectomy (DG) remains controversial and still not defined. The purpose was to perform a comprehensive evaluation within the major type of intestinal reconstruction after DG for gastric cancer.

Methods: Systematic review and network meta-analyses of randomized controlled trials (RCTs) to compare Billroth I (BI), Billroth II (BII), Billroth II Braun (BII Braun), Roux-en-Y (RY), and Uncut Roux-en-Y (URY). Risk ratio (RR) and weighted mean difference (WMD) were used as pooled effect size measures while 95% credible intervals (CrI) were used to assess relative inference.

Results: Ten RCTs (1456 patients) were included. Of these, 448 (33.7%) underwent BI, 220 (15.1%) BII, 114 BII Braun (7.8%), 533 (36.6%) RY, and 141 URY (9.6%). No significant differences were found among treatments for 30-day mortality, anastomotic leak, anastomotic stricture, and overall complications. At 12-month follow-up, RY was associated with a significantly reduced risk of remnant gastritis compared to BI (RR=0.56; 95% Crl 0.35-0.76) and BII reconstruction (RR=0.47; 95% Crl 0.22-0.97). Similarly, despite the lack of statistical significance, RY seems associated with a trend toward reduced endoscopically proven esophagitis compared to BI (RR=0.58; 95% Crl 0.24-1.51) and bile reflux compared to BI (RR=0.48; 95% Crl 0.17-1.41), BII (RR=0.74; 95% Crl 0.20-2.81), and BII Braun (RR=0.65; 95% Crl 0.30-1.43).

Conclusions: This network meta-analysis shows that there are five main options for intestinal anastomosis after DG. All techniques seem equally safe with comparable anastomotic leak, anastomotic stricture, overall morbidity, and short-term outcomes. In the short-term follow-up (12 months), RY seems associated with a reduced risk of remnant gastritis and a trend toward a reduced risk of bile reflux and esophagitis.

Keywords: Billroth I; Billroth II; Billroth II Braun; Network meta-analysis; Roux-en-Y.

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