Figure 9From: Histopathological grading of pediatric ependymoma: reproducibility and clinical relevance in European trial cohortsProgression-free (PFS) and overall survival (OS) in AIEOP trial cohort patients split according to histological grade and extent of surgical resection, showing significantly different survival curves (PFS p = 0.0004; OS p < 0.0001). (a) PFS and (b) OS. CR = complete resection; STR = subtotal resection; black line = CR-Gd. II; red line = STR-Gd. II; blue line = CR-Gd. III; green line = STR-Gd. IIIBack to article page