Fig. 3From: Therapeutic method for early-stage second primary non-small lung cancer: analysis of a population-based databaseA: For patients with a first primary tumor less than 2 cm, the overall survival rates for those who received lobectomy or sublobectomy were significantly different (p < 0.001). B: For patients with a second primary tumor less than 2 cm, the overall survival rates for patients who underwent lobectomy or sublobectomy were not significantly different (p = 0.512)Back to article page