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The prognostic impact of sex on surgically resected non-small cell lung cancer depends on clinicopathologic characteristics

By William Sterlacci, Alexandar Tzankov, Lothar Veits, Wilhelm Oberaigner, Thomas Schmid, Wolfgang Hilbe and Michael Fiegl

Abstract

The increasing incidence of lung cancer in women and their supposed survival advantage over men requires clarification of the significance of sex. Age, stage, histologic features, differentiation grade, and Ki-67 index were assessed in 405 surgically resected non-small cell lung cancers (NSCLCs) using a standardized tissue microarray platform. Women were associated with well/moderate tumor differentiation, a Ki-67 index of 3% or less, and adenocarcinoma histologic features. Female sex predicted increased survival time only by univariate analysis. Stratified by sex, increased survival was noted for women older than 64 years, with a tumor at postsurgical International Union Against Cancer stage I, with adenocarcinoma histologic features, with well- or moderately differentiated tumors, or with a Ki-67 index of 3% or less. Sex is not an independent prognostic parameter for patients with surgically resected NSCLC. Sex-linked differences are associated with other factors, thus simulating a prognostic impact of sex. This study elucidates sex-specific interactions between patient and tumor characteristics, which are pivotal toward improving prognostic accuracy, individualized therapies, and screening efforts

Publisher: Lippincott Williams & Wilkins
Year: 2011
DOI identifier: 10.1309/AJCPQF24NYWNMVMG
OAI identifier: oai:edoc.unibas.ch:31770
Provided by: edoc
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