Figure 3From: Prognostic impact of vascular invasion and standardization of its evaluation in stage I non-small cell lung cancer Recurrence-free survival according to the number of invaded lymphatic vessels. A) Comparison of 0 ly (n = 284), 1 ly (n = 20), and ≥2 ly (n = 31) cases. B) Comparison between 0 ly (n = 284) and ≥1 ly (n = 51) cases.Back to article page