Fig. 3From: Comprehensive analysis of spread through air spaces in lung adenocarcinoma and squamous cell carcinoma using the 8th edition AJCC/UICC staging systemDisease-free survival (DFS) according to spread through air spaces (STAS) in single-stage lung adenocarcinoma (ADC) cases. a: Stage I (p < 0.001); b: stage II (p = 0.007); c: stage IA (p = 0.009); d: stage IB (p = 0.025); e: stage IIA (p = 0.003)Back to article page