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Local recurrence after surgery for non–small cell lung cancer: A recursive partitioning analysis of multi-institutional data
This derivation and validation study involving 2300 patients who underwent resection for NSCLC explored predictors of local/regional recurrence. Recurrence-free survival was similar between the datasets. Predictors of recurrence were different between the datasets. The derivation dataset identified stage I adeno, stage I squamous/large cell, and stage II-IIIA as predictors. The validation dataset identified lymphovascular invasion and stage as predictors.