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Overall Survival of Patients with Unsuspected vs. Suspected N2 NSCLC. Patients with “unsuspected N2” disease had underwent lobectomy as primary therapy for cT1-3 N0-1 NSCLC and were found to have pN2 disease at the time of surgery. Patients with “suspected N2” disease had clinical stage IIIA-N2 NSCLC who underwent induction chemotherapy ± radiation followed by lobectomy.
