PMC5379805_01
Axial T1 image showing tumor isointense to grey matter
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F1
Axial T2 image showing mixed iso to hypointense tumor
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F2
Post-Gd coronal section showing intense enhancement
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F3
Hematoxylin and eosin stain low-power view hypo and hypercellular area
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F4
Microscopic examination disclosed hypo and hypercellular areas separated from each other by thick bands of hyalinised tissue [Figure 4].
High-power x40 view, nuclear pleomorphism and mitotic activity with two small blood vessels
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F5
At places, giant cells were also seen with mitotic activity more than 4 per 10 HPF (HPF: High-power fields), [Figure 5] cytological atypia, and areas of necrosis.
(a) Van Gieson stain collagens stain red (b) CD34 x10 strong and diffused positivity (c) Bcl2 x10 diffuse and strong positivity (d) Ki-67 x40 high power, showing positivity
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F6
Van Gieson staining showed foci of collagen [Figure 6a]. Small to large blood vessels were also seen [Figure 6b]. Marker study showed diffuse and strong positivity for CD34 and Bcl2 and negativity for smooth muscle actin (SMA) [Figure 6c], pan-cytokeratin, S100, and epithelial membrane antigen (EMA) [Figure 6d].