Background: Resection of liver metastases from gastric cancer (GC) is rarely performed, and the outcome after hepatic surgery has not been systematically evaluated in the literature. The aim of this study was to perform a systematic review of outcome and prognostic factors for survival after liver metastasectomy for GC.
Methods: We performed a meta-analysis of published studies that focused on long-term outcomes (5-year overall survival [OS]) after surgical management of liver metastases from GC, and included more than 10 patients each. Pooled hazard ratios (HRs) were calculated for variables considered as potential prognostic factors for OS in at least three publications.
Results: Twenty-three studies comprising a total of 870 patients were considered in this analysis. The pooled weighted median OS was 22 months (95%CI 17.6-27.2). The pooled 5-year OS after liver resection was 23.8% (95%CI 19-29.3%). The pooled 5-year OS rates for metachronous and synchronous metastases were 30% (95%CI 24.7-35.8%) and 22.6% (95%CI 14-34.4%), respectively. Parameters associated with poor survival were (i) multiple metastases, and (ii) large size of metastases.
Conclusions: Hepatic resection of GC liver metastases is associated with an acceptable 5-year OS, in particular after surgery of metachronous lesions, and could be offered to selected patients.
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