Tumor volume is more reliable to predict nodal metastasis in non-small cell lung cancer of 3.0 cm or less in the greatest tumor diameter

World Journal of Surgical Oncology
Bei JiaXiaodong Su

Abstract

In this study, we sought to evaluate the correlation between TV, GTD, and lymph node metastases in NSCLC patients with tumors of GTD ≤ 3.0 cm. We retrospectively analyzed the characteristics of clinicopathologic variables for lymph node involvement in 285 NSCLC patients with tumors of GTD ≤ 3.0 cm who accepted curative surgical resection. The TVs were semi-automatically measured by a software, and optimal cutoff points were obtained using the X-tile software. The relationship between GTD and TV were described using non-linear regression. The correlation between GTD, TV, and N stages was analyzed using the Pearson correlation coefficient. The one-way ANOVA was used to compare the GTD and TV of different lymph node stage groups. The relationship between GTD and TV accorded with the exponential growth model: y = 0.113e1.455x (y = TV, x = GTD). TV for patients with node metastases (4.78 cm3) was significantly greater than those without metastases (3.57 cm3) (P < 0.001). However, there were no obvious GTD differences in cases with or without lymph node metastases (P = 0.054). We divided all cases into three TV groups using the two cutoff values (0.9 cm3 and 3.9 cm3), and there was an obvious difference in the lymphatic involvement r...Continue Reading

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Methods Mentioned

BETA
surgical resection
dissection

Software Mentioned

SPSS
PHILIPS IntelliSpace Portal
tile
Statistical package for social sciences ( SPSS )

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