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  • Title: [Prognostic significance of metastatic lymph nodes ratio in patients with T2-T3 stage gastric cancer].
    Author: Feng RH, Zhu ZG, Yan M, Chen J, Xiang M, Yin HR, Lin YZ.
    Journal: Zhonghua Wei Chang Wai Ke Za Zhi; 2007 Sep; 10(5):431-5. PubMed ID: 17851782.
    Abstract:
    OBJECTIVE: To evaluate the prognostic significance of metastatic lymph nodes ratio in patients with T(2)~T(3) stage gastric cancer. METHODS: Clinical data of 238 patients with T(2)-T(3) stage gastric cancer undergone radical gastrectomy and D(2) lymphadenectomy, at least 15 lymph nodes was dissected per patient, were analyzed retrospectively. Spearman correlation analysis was used to determine the correlation coefficient. Survival was determined by the Kaplan-Meier method and differences were assessed by the Log-rank test. Multivariate analysis was performed using the Cox proportional hazard regression model in forward stepwise regression. Receiver working characteristic curve was used to compare the accuracy of the metastatic lymph nodes ratio in predicting the death of patients 5 years postoperatively and that of metastatic lymph nodes number. RESULTS: The metastatic lymph nodes ratio didn't correlate with the total number of dissected lymph nodes, whereas metastatic lymph nodes number did. Kaplan-Meier survival analysis demonstrated the metastatic lymph nodes ratio significantly influenced the postoperative survival time and Cox proportional hazard regression model analysis showed the metastatic lymph nodes ratio was an independent poor prognostic factor. There was no significant difference between the area under the receiver working characteristic curve of metastatic lymph nodes ratio and metastatic lymph nodes number in predicting the death of patients 5 years postoperatively. CONCLUSIONS: The metastatic lymph nodes ratio in T(2)-T(3) stage gastric cancer patients is not correlated with the total number of dissected lymph nodes if at least 15 lymph nodes are dissected. The metastatic lymph nodes ratio is a major independent poor prognostic factor of the patients of T(2)-T(3) stage gastric cancer. The ability of the metastatic lymph nodes ratio in predicting the death of T(2)-T(3) stage gastric cancer patients 5 years postoperatively is the same as that of metastatic lymph nodes number.
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