Fig. 2
From: CNS tumor with EP300::BCOR fusion: discussing its prevalence in adult population
Radiological features of Case #2 tumor. a Coronal T2-weighted MRI sequence showing a well-delineated tumor developed inside the right ventricle. b Axial diffusion-weighted sequence showing hyperintensity consistent with hypercellularity of the solid component (arrow) c MR Perfusion with Cerebral Blood Volume Map showing hyperperfusion of the tumor (arrow). d Axial T1-weighted injection showing a spontaneous hyperintense intra-ventricular haemorrhage (arrowhead); e strong enhancement of the solid component is present after contrast injection (arrow) f MR Spectroscopy demonstrated elevated Choline (Cho), decreased NAA and elevation of lipids-lactates complex (Lac). g Ependymal differentiation (HPS, magnification 400 ×). h Microcysts containing myxoid substance (HPS, magnification 400 ×). i Spindle cell component (HPS, magnification 400 ×). (J) Olig2 immunoexpression by tumor cells (magnification 400 ×). k No immunopositivity for GFAP (magnification 400 ×). l MIB1 labeling index (magnification 400 ×). m No immunopositivity for BCOR (magnification 400 ×). Black scale bars represent µm. HPS Hematoxylin Phloxin Saffron