U F Wellner1, YinFeng Shen2, T Keck1, WenYin Jin3, Ze Xu3. 1. Clinic for Surgery, UKSH Campus Lübeck, Lübeck, Germany. 2. Department of Surgery, Hubei Hospital of Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, 430061, People's Republic of China. dfydzsjd@126.com. 3. Department of Surgery, Hubei Hospital of Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, 430061, People's Republic of China.
Abstract
PURPOSE: To assess the available evidence on the prognostic factors for the 5-year survival for patients with distal cholangiocarcinoma (DCC) following surgical resection. METHODS: We performed a comprehensive search of abstracts included in databases where relevant studies were published between January 2000 and August 2015. Risk ratios (RRs), 95 % confidence intervals (95 % CIs), and random-effects model were calculated using RevMan 5.3 software. RESULTS: A total of 23 observational studies involving 2063 patients with DCC were analyzed. The meta-analysis showed that postoperative adjuvant chemotherapy was not confirmed as a prognostic factor, with similar 5-year survival rates between those receiving and not receiving chemotherapy (RR 0.71; 95 % CI 0.21-2.36; P = 0.57). Perineural invasion (RR 0.51; 95 % CI 0.40-0.64; P < 0.00001), lymph node metastasis (RR 0.51; 95 % CI 0.38-0.70; P < 0.0001), positive resection margin status (RR 2.11; 95 % CI 1.36-3.30; P = 0.001), and not-well-differentiated adenocarcinoma (RR 1.77; 95 % CI 1.39-2.25; P < 0.00001) were associated with shorter survival. CONCLUSIONS: Perineural invasion, lymph node metastasis, resection margin status, and tumor differentiation were the significant prognostic factors for the 5-year survival.
PURPOSE: To assess the available evidence on the prognostic factors for the 5-year survival for patients with distal cholangiocarcinoma (DCC) following surgical resection. METHODS: We performed a comprehensive search of abstracts included in databases where relevant studies were published between January 2000 and August 2015. Risk ratios (RRs), 95 % confidence intervals (95 % CIs), and random-effects model were calculated using RevMan 5.3 software. RESULTS: A total of 23 observational studies involving 2063 patients with DCC were analyzed. The meta-analysis showed that postoperative adjuvant chemotherapy was not confirmed as a prognostic factor, with similar 5-year survival rates between those receiving and not receiving chemotherapy (RR 0.71; 95 % CI 0.21-2.36; P = 0.57). Perineural invasion (RR 0.51; 95 % CI 0.40-0.64; P < 0.00001), lymph node metastasis (RR 0.51; 95 % CI 0.38-0.70; P < 0.0001), positive resection margin status (RR 2.11; 95 % CI 1.36-3.30; P = 0.001), and not-well-differentiated adenocarcinoma (RR 1.77; 95 % CI 1.39-2.25; P < 0.00001) were associated with shorter survival. CONCLUSIONS: Perineural invasion, lymph node metastasis, resection margin status, and tumor differentiation were the significant prognostic factors for the 5-year survival.
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