PMC3927089_01
MRI Brain shows a heterogeneously hyperintense mass extending from planum sphenoidale and compressing both frontal lobes on T2WI sagittal images (a) with surrounding edema. The lesion shows heterogeneous postcontrast enhancement and extends to the right frontal sinus and anterior cerebral artery on T1W1 image with contrast (b)
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F1
Computed tomography (CT) scan revealed a contrast enhancing mass arising from planum sphenoidale with mass effect [Figure 1].
Photomicrograph showing (a) Islands of gliomatous component scattered among areas of marked fibroblastic proliferation (H and E, x100); (b) Areas of cartilaginous and chordoid metaplasia (H and E, x200). Inset showing positivity for S-100 in cartilaginous areas; (c) Sharp demarcation between reticulin poor gliomatous component and reticulin rich fibroblastic area (Reticulin stain, x100); (d) Glioma showing strong positivity for GFAP (x40)
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F2
On immunohistochemistry using Dako antibody kit, the tumor cells expressed glial fibrillary acid protein (GFAP). [Figure 2] Epithelial membrane antigen (EMA) highlighted the reactive arachnoid cells.