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- W2146958210 abstract "Purpose Although nodal metastasis is the most powerful prognostic factor in rectal cancer, marked heterogeneity exists within stage III rectal cancer. Recent studies of rectal cancer have shown a prognostic superiority of the lymph node ratio (LNR) compared with N stage. The purpose of this study was to investigate the prognostic value of the LNR in the era of the 7th edition of the TNM classification. Methods We included 190 patients who underwent a curative resection for rectal cancer with nodal metastasis. The patients were divided into four groups on the basis of statistically calculated cut-off values as 0.21, 0.32, and 0.61. Results The LNR was an independent risk factor for overall survival (OS; P = 0.008) and for systemic recurrence-free survival (SRFS; P = 0.002). However, the LNR was not a predictive factor for local recurrence. When the N stage of the sixth TNM staging system was separately analyzed as a covariate, the LNR was also found to be a predictive factor for both OS and SRFS (P = 0.012 and P = 0.004, respectively). A LNR value of 0.21 offered the best cut off to separate patients into two prognostic groups. Conclusion The defined cut-off values of the LNR were an independent risk factor for OS and distant metastasis-free survival in patients with rectal cancer, irrespective of the sixth or the seventh version of the TNM classification, and the LNR should be considered as a prognostic variable in any future staging system. Keywords: Rectal cancer; Lymph node; Prognosis" @default.
- W2146958210 created "2016-06-24" @default.
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- W2146958210 date "2011-01-01" @default.
- W2146958210 modified "2023-09-26" @default.
- W2146958210 title "Prognostic Significance of Lymph Node Ratio in Stage III Rectal Cancer" @default.
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- W2146958210 doi "https://doi.org/10.3393/jksc.2011.27.5.252" @default.
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