BACKGROUND: The impact of postoperative complications (POCs) on long-term survival outcomes following hepatic resection for colorectal liver metastasis (CRLM) is in controversy. The aim of the present meta-analysis was to systematically evaluate the POC effect on overall survival (OS) and disease-free survival (DFS) in patients undergoing hepatic resection for CRLM. METHODS: We conducted a systematic review and meta-analysis of all observational studies to evaluate the POC effect on OS and DFS in patients undergoing hepatic resection for CRLM. A search for all major databases and relevant journals from inception to January 2014 without restriction on languages or regions was performed. POCs were extracted and graded according to a validated system of classification. Outcome measures were postoperative 1-, 2-, 3-, and 10-year OSs and DFSs. Both random-effects and fixed-effect models were used to pool the hazard ratios (HRs) of the survival outcomes. Test of heterogeneity was performed with the Q statistic. RESULTS: A total of 2370 patients were included in the meta-analysis. Both 5- and 10-year postoperative OSs showed significant decreases in patients with POCs (HR = 1.52; 95 % CI 1.27-1.83; P < 0.001 and HR = 1.36; 95 % CI 1.18-1.58; P < 0.001, respectively). Similar outcomes were also observed in terms of DFSs, with the 5- and 10-year HRs found to be 1.37 (95 % CI 1.23-1.53; P < 0.001) and 1.34 (95 % CI 1.17-1.53; P < 0.001), respectively, compared to no POC group. CONCLUSIONS: POCs are strongly related to long-term oncologic outcomes following hepatic resection for CRLM. Further efforts to refine surgical technique and postoperative management to avoid complications may improve the long-term oncological outcomes of the selected patients.
BACKGROUND: The impact of postoperative complications (POCs) on long-term survival outcomes following hepatic resection for colorectal liver metastasis (CRLM) is in controversy. The aim of the present meta-analysis was to systematically evaluate the POC effect on overall survival (OS) and disease-free survival (DFS) in patients undergoing hepatic resection for CRLM. METHODS: We conducted a systematic review and meta-analysis of all observational studies to evaluate the POC effect on OS and DFS in patients undergoing hepatic resection for CRLM. A search for all major databases and relevant journals from inception to January 2014 without restriction on languages or regions was performed. POCs were extracted and graded according to a validated system of classification. Outcome measures were postoperative 1-, 2-, 3-, and 10-year OSs and DFSs. Both random-effects and fixed-effect models were used to pool the hazard ratios (HRs) of the survival outcomes. Test of heterogeneity was performed with the Q statistic. RESULTS: A total of 2370 patients were included in the meta-analysis. Both 5- and 10-year postoperative OSs showed significant decreases in patients with POCs (HR = 1.52; 95 % CI 1.27-1.83; P < 0.001 and HR = 1.36; 95 % CI 1.18-1.58; P < 0.001, respectively). Similar outcomes were also observed in terms of DFSs, with the 5- and 10-year HRs found to be 1.37 (95 % CI 1.23-1.53; P < 0.001) and 1.34 (95 % CI 1.17-1.53; P < 0.001), respectively, compared to no POC group. CONCLUSIONS: POCs are strongly related to long-term oncologic outcomes following hepatic resection for CRLM. Further efforts to refine surgical technique and postoperative management to avoid complications may improve the long-term oncological outcomes of the selected patients.
Authors: Thomas J Howard; Joseph E Krug; Jian Yu; Nick J Zyromski; C Max Schmidt; Lewis E Jacobson; James A Madura; Eric A Wiebke; Keith D Lillemoe Journal: J Gastrointest Surg Date: 2006-12 Impact factor: 3.452
Authors: B Cady; R L Jenkins; G D Steele; W D Lewis; M D Stone; W V McDermott; J M Jessup; A Bothe; P Lalor; E J Lovett; P Lavin; D C Linehan Journal: Ann Surg Date: 1998-04 Impact factor: 12.969
Authors: S Ambiru; M Miyazaki; T Isono; H Ito; K Nakagawa; H Shimizu; K Kusashio; S Furuya; N Nakajima Journal: Dis Colon Rectum Date: 1999-05 Impact factor: 4.585
Authors: K S Hughes; R Simon; S Songhorabodi; M A Adson; D M Ilstrup; J G Fortner; B J Maclean; J H Foster; J M Daly; D Fitzherbert Journal: Surgery Date: 1986-08 Impact factor: 3.982
Authors: Hassan Z Malik; K Rajendra Prasad; Karim J Halazun; Amir Aldoori; Ahmed Al-Mukhtar; Dhanwant Gomez; J Peter A Lodge; Giles J Toogood Journal: Ann Surg Date: 2007-11 Impact factor: 12.969