Figure 1

Cumulative risks of selected second primary cancer following a first primary lung cancer, taking death into account as the competing risk. ADC, adenocarcinoma; SCC, squamous cell lung carcinoma; SCLC, small cell carcinoma. A: smoking-related SPCs among female patients; B: non-smoking-related SPCs among female patients; C: smoking-related SPCs among male patients; D: non-smoking-related SPCs among male patients.