Figure 3From: Histopathological grading of pediatric ependymoma: reproducibility and clinical relevance in European trial cohortsSpecific histopathological characteristics of ependymoma. (a) A nodule of moderately high cell density against a low cell density background. (H&E, × 40). (b) The tumor vasculature here shows mural cell hyperplasia and qualifies as microvascular proliferation (H&E, ×100).Back to article page