Cancer
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The objective of this study was to examine the effects of different definitions of local recurrence on the reported patterns of failure and associated risk factors in patients who undergo potentially curative resection for stage I nonsmall cell lung cancer (NSCLC). ⋯ Local recurrence increased nearly 2-fold when a broad definition was used instead of a narrow definition. The definition also affected which factors were associated significantly with both local and distant failure on multivariate analysis. Comparable definitions must be used when analyzing different series.