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Abstract
The purpose of this study was to evaluate the impact of the negative lymph node (NLN) count on the prognostic prediction of the ratio between positive and examined lymph nodes (RML) in gastric cancer after curative resection. The positive and negative node counts were determined for 456 patients who underwent curative resection for gastric cancer. Overall survival was examined according to clinicopathologic variables. The correlation between the NLN count and the aforementioned best variable for prediction the disease-specific overall survival was examined. The NLN count cutoffs were designed as 0-9, 10-14, and > or =15, with the 5-year survival rate 4.1, 30.7, and 74.8%, respectively. RML of 98 patients who had an NLN count of nine or fewer was > or =40%. The median survival of these patients was 12 months. Of 88 patients who had 10 to 14 NLN count, 7 had 74-month median survival with 0.1-10% RML, 52 had 47-month median survival with 10.1-40% RML, and 29 had 22-month median survival with >40% RML. Of 270 patients who had > or =15 NLN count, 157 had 114-month median survival without positive nodes, 62 had 98-month median survival with 0.1-10% RML, 45 had 40-month median survival with 10.1-40% RML, and 6 had 14-month median survival with >40% RML. The NLN count is a key factor for improvement of survival prediction of RML in gastric cancer.
Published Version
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