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The Impact of the Lymph Node Ratio is Greater than Traditional Lymph Node Status in Stage III Colorectal Cancer Patients

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Abstract

Background

The prognostic value of nodal status in colorectal cancer (CRC) patients may be influenced by the total number of lymph nodes (LNs) harvested. This study evaluates the impact of LN ratio (LNR) on CRC patients’ outcome.

Methods

A total of 612 stage III CRC patients who underwent curative-intent surgery between 2004 and 2008 were enrolled. The measured end point was postoperative disease-free survival (DFS) and overall survival (OS).

Results

The metastatic LN numbers were significantly higher in patients with more than 12 LN harvested (4.6 ± 5.81 vs. 2.7 ± 1.97, P < 0.001). The mean LNR was 22.9 ± 20 % (range = 2–100 %, median = 16.7 %). As the cutoff value of LNR was set above 17 %, the impact of the LNR on 5-year DFS became statistically significant. In univariate analysis, the 5-year DFS and OS for patients with high-LNR tumors was 54.4 and 57.3 %, respectively, significantly lower than those for patients with low-LNR tumors (72.8 and 76.4 %; P < 0.001). In multivariate analysis, the independent factors affecting the 5-year DFS and OS were tumor depth, carcinoembryonic antigen level, and LNR.

Conclusion

The LNR, set at the median value or 17 %, could be an independent prognostic factor for stage III CRC patients.

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Authors and Affiliations

  1. Division of Colon and Rectal Surgery, Department of Surgery, Taipei Veterans General Hospital, National Yang-Ming University, Taipei, Taiwan

    Yen-Jung Lu, Chun-Chi Lin, Huann-Sheng Wang, Shung-Haur Yang, Jeng-Kai Jiang, Yuan-Tzu Lan, Tzu-Chen Lin, Wei-Shone Chen, Jen-Kou Lin & Shih-Ching Chang

  2. Department of Clinical Pathology, Yang-Ming Campus, Taipei City Hospital, Taipei, Taiwan

    Pei-Ching Lin

  3. Department of Pathology, Taipei Veterans General Hospital, National Yang-Ming University, Taipei, Taiwan

    Wen-Yi Liang

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  1. Yen-Jung Lu
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Correspondence to Shih-Ching Chang.

Additional information

Yen-Jung Lu and Pei-Ching Lin contributed equally to this work.

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Lu, YJ., Lin, PC., Lin, CC. et al. The Impact of the Lymph Node Ratio is Greater than Traditional Lymph Node Status in Stage III Colorectal Cancer Patients. World J Surg 37, 1927–1933 (2013). https://doi.org/10.1007/s00268-013-2051-4

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  • DOI: https://doi.org/10.1007/s00268-013-2051-4

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