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Adjuvant Chemotherapy for T3 Non-Small Cell Lung Cancer with Additional Tumor Nodules in the Same Lobe
This is a retrospective National Cancer Data Base cohort study of patients with pathologic stage T3 invasive NSCLC with separate tumor nodules in the same lobe. The goal was to determine with adjuvant chemotherapy increased survival. The study cohort was divided into 2 groups: 1) Pathologic stage T3 with an additional tumor nodule in the same lobe (adjuvant chemotherapy n=450, surgery only n=563). In this group, the 3-year overall survival for the adjuvant subset was 70% versus 59% in the surgery only subset and 2) Pathologic stage T3 with an additional tumor nodule in the same lobe, excluding pN>0, Tumor size >=4 cm, and tumor invasion (adjuvant chemotherapy n=192, surgery only n=336). In this group, the 3-year overall survival for the adjuvant subset was 86% versus 71% in the surgery only subset.