Fig. 3From: Clinical, radiological and molecular characterization of intramedullary astrocytomasEvent-free survival (EFS) of grade I pilocytic and II diffuse intramedullary astrocytomas. Kaplan-Meier curves of EFS for grade I pilocytic and grade II diffuse IMAs without (a) and after (b) stratification using the extent of surgical resection: biopsy vs. (partially or totally) resected cases. p-values were calculated using the log-rank testBack to article page