Fig. 5From: Analysis of prognostic factors for survival in patients with primary spinal chordoma using the SEER Registry from 1973 to 2014Kaplan–Meier estimated overall survival in all spinal chordoma patients, stratified by a gender (female vs male), b metastasis status at presentation (non-metastasis vs metastasis), c therapy method (no surgery vs surgery perform), and d primary site (vertebral column vs sacrum/pelvis)Back to article page