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Postoperative survival curves of all patients (n=38) with stage IV NSCLC. (A) All stage IV NSCLC patients underwent complete resection of the primary lesion; (B) survival curves of the M-better (heavy line) and M-worse (dotted line) groups; (C) according to SCC (heavy line) or non-SCC (dotted line). NSCLC, non-small cell lung cancer; SCC, squamous cell carcinoma; MST, median survival time.
