Fig. 5From: Mesenchymal non-meningothelial tumors of the central nervous system: a literature review and diagnostic update of novelties and emerging entitiesHistopathological findings of emerging entities. A Cavernous-type pattern composed of dilated vascular channels with variable thickening of the walls (HPS, magnification × 10) with B some perivascular concentric arrangement of myoid cells (HPS, magnification × 400). C The vascular cavities were lined by endothelial cells stained by CD34 (magnification × 400). D In the walls of vascular structure, the tumor cells were diffusely immunoreactive for h-caldesmon (magnification × 400). E Infiltration of the brain parenchyma (HPS, magnification × 400). F Spindle cell proliferation (HPS, magnification × 400). G Diffuse expression of CD34 (magnification × 400). H Strong expression of S100 (magnification × 400). Black scale bars represent 500 μm (A), 100 μm (E), and 50 μm (B–D and F–H). DALM dural angioleiomyoma, HPS hematoxylin phloxin saffron, SCN spindle cell neoplasmBack to article page