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. 2023 Jul 3;12(13):4460. doi: 10.3390/jcm12134460

Figure 1.

Figure 1

Kaplan–Meier curves for PFS (progression-free survival) rates in patients with clival chordomas. (A) Overall PFS rates in all 17 patients. (B) PFS rates in patients with GTR (100%), NTR (>90%), and STR (50–90%). PFS rates differed significantly among the three groups by log-rank test (p < 0.001). (C) PFS rates in patients operated on using ETCA and combined approaches. (D) PFS rates in patients with and without postoperative remnant brainstem lesion. PFS rates differed significantly between the two groups by log-rank test (p = 0.001).