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- W2008698545 abstract "In Brief Objective: The purpose of this study is to analyze the relationship between the number of examined lymph nodes (NexLN) and survival in gastric cancer and to determine whether the metastatic/examined lymph node ratio (LN ratio) system can compensate for the shortcomings of the UICC/AJCC staging. Methods: Prospective data of 8949 primary T1-T4a gastric cancer patients who underwent curative surgery were reviewed. The patients were stratified by T-stage and grouped according to NexLN; 1 to 14 exLN denoted the first group and every subsequent 10 LNs thereafter. Numbers of LN and 5-year survival rates were analyzed according to NexLN. “The NR-staging system” was generated using 0.2 and 0.5 as the cut-off values of LN ratio and then compared with UICC/AJCC stages. Results: The proportion of advanced N-stage increased with NexLN. Survival and the LN ratio were constant regardless of NexLN when combining all N0-N3b patients, however, T2/3 and T4a patients showed an increasing tendency toward survival in N1/2 and N3a as NexLN increased, mainly due to a stage migration effect. The LN ratio system showed better patterns of distribution of the LN stage and survival graph. The power of the differential staging of the LN ratio system was fortified with higher NexLN. Conclusion: The relationship between NexLN and survival is probably affected by stage migration in a high-volume gastric cancer center. The LN ratio system could be a better option to compensate for this effect, and the value of the prognosis prediction in this system increases with a higher NexLN. The effect of the number of examined lymph nodes (LN) on the survival of gastric cancer patients was identified in an Eastern institution. The effect was mainly due to the stage migration in the current TNM stages. Metastatic/examined LN ratio can be used for more accurate N-staging in cases of high-yield LN examination." @default.
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- W2008698545 date "2012-01-01" @default.
- W2008698545 modified "2023-09-27" @default.
- W2008698545 title "Stage Migration Effect on Survival in Gastric Cancer Surgery With Extended Lymphadenectomy" @default.
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- W2008698545 doi "https://doi.org/10.1097/sla.0b013e31821d4d75" @default.
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