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Survival analysis. Time to progression of multiple primary and metastatic non-small cell lung tumors, as classified using the Martini-Melamed criteria (A), molecular consensus (B), and comprehensive histologic assessment (C). Time to progression was calculated from the resection of the last tumor. Squamous cell carcinoma was the most common histologic type in the Martini-Melamed study, and adenocarcinoma was most common in the current study.
