Fig. 1From: Outcomes of carbon ion radiotherapy compared with segmentectomy for ground glass opacity-dominant early-stage lung cancerComparison of overall survival after segmentectomy versus CIRT for lung cancer. Kaplan–Meier estimates of the survival probability at 2.5, 5, and 7.5 years after segmentectomy in 48 patients were 98%, 96%, and 96%, respectively (blue line), and those after CIRT in 14 patients were 93%, 86%, and 64%, respectively (red line). The log-rank test showed inferior survival in CIRT group compared with segmentectomy group (P = 0.000860)Back to article page