Although the survival difference for the two smallest cutpoints did not reach statistical significance, the survival differences among the 3–7 cm cutpoints did reach statistical significance and, interestingly, patients with tumors larger than 7 cm had nearly identical survival as those with clinical T3 tumors (17 vs. 19 months, p = 0.61).
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Non-small cell lung cancer staging: proposed revisions to the TNM system.
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