Fig. 2From: The preliminary results of proton and carbon ion therapy for chordoma and chondrosarcoma of the skull base and cervical spineOverall survival (OS) and progression free survival (PFS) for all patients based on Karnofsky performance status (80 vs. ≥90), the presence of cranial nerve injury, nature of radiotherapy (RT vs. re-RT), tumor volume (> vs. < 60 cc), and the presence of critical organ compressionBack to article page