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Prognostic Factors in Resected Pathologic (p-) Stage IIIA-N2, Non-Small-Cell Lung Cancer

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Abstract

Background

Postoperative prognosis for patients with pathologic (p-) stage IIIA-N2 non-small-cell lung cancer (NSCLC) is poor, and significant factors that influence the prognosis remain unclear.

Methods

A total of 99 patients who underwent complete resection for p-stage IIIA-N2 NSCLC without any preoperative therapy were retrospectively reviewed. Biological features such as tumor angiogenesis (intratumoral microvessel density [IMVD]), proliferative activity (proliferative index [PI]), and p53 status were also evaluated immunohistochemically.

Results

Univariate analysis revealed that the number of involved N2 stations was a significant prognostic factor; 5-year survival rates for a tumor with metastases in single N2 stations, tumor with metastases in two N2 stations, and tumor with metastases in 3 or more N2 stations were 41.6%, 35.3%, and 0.0%, respectively (P = .041) In addition, the 5-year survival rate for cN0-1 disease was significantly higher than that for cN2 disease (41.9% and 25.5%, respectively; P = .048) Tumor angiogenesis and proliferative activity were the most significant prognostic factors; 5-year survival rates for lower-IMDV tumor and higher-IMVD tumor were 53.6% and 15.9%, respectively (P = .002), and those for lower-PI tumor and higher-PI tumor were 47.0% and 20.4%, respectively (P = .019) There was no difference in the postoperative survival between tumor showing aberrant p53 expression and tumor showing no aberrant p53 expression. These results were confirmed by a multivariate analysis.

Conclusions

P-stage IIIA-N2 NSCLC cases represented a mixture of heterogeneous prognostic subgroups, and the number of involved N2 stations, cN status, PI, and IMVD were significant predictors of the survival.

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Correspondence to Fumihiro Tanaka MD.

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Tanaka, F., Yanagihara, K., Otake, Y. et al. Prognostic Factors in Resected Pathologic (p-) Stage IIIA-N2, Non-Small-Cell Lung Cancer. Ann Surg Oncol 11, 612–618 (2004). https://doi.org/10.1245/ASO.2004.07.013

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  • DOI: https://doi.org/10.1245/ASO.2004.07.013

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