PMC5820876_01
Contrast-enhanced computed tomography head with bone window (a-c) demonstrating well-defined, lytic, sharply marginated intradiploic lesion marked with an arrow in the left sphenotemporal region reaching up to orbit and sphenoid sinus medially. Bony shell (arrow) is seen all around the lesion
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F1
Bone window of CT scan further demonstrated the intradiploic nature of the lesion [Figure 1a-c].
Contrast magnetic resonance imaging demonstrating homogenously enhancing left sphenotemporal lesion in axial (a), sagittal (b), and coronal planes (c)
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F2
On magnetic resonance imaging (MRI), the lesion was hypointense on T1-weighted, hyperintense on T2-weighted sequences, and demonstrated homogenous enhancement after gadolinium administration [Figure 2].
Intraoperative image demonstrating the pure extradural nature of lesion with intact dura
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F3
The underlying temporal lobe and dura were seen buckled under pressure but were not involved by tumor [Figure 3].
Post bony reconstruction using autologous split calvarial bone graft and titanium plates
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F4
She was doing well at her last follow-up visit 3 months after surgery [Figures 4 and 5].
Resected tumor tissue
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F5
She was doing well at her last follow-up visit 3 months after surgery [Figures 4 and 5].
Photomicrographs showing sheets of tumor cells with interspersed collagen bundles (a: H and E, x40); polygonal cells with clear to eosinophilic cytoplasm (b: H and E, x400); immunoreactivity for epithelial membrane antigen (c: Immunohistochemistry, x400) and vimentin (d: Immunohistochemistry, x400); immunonegative for cytokeratin (e: Immunohistochemistry, x400) and CD34 (f: Immunohistochemistry: x400)
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F6
Figure 6 showed a moderately cellular tumor, arranged in sheets with interspersed collagen bundles.