PMC5332251_01
Computed tomography scan demonstrating hyperdense left middle cranial fossa mass with osteolysis.
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Head computed tomography demonstrated a hyperdense mass in the left middle fossa (Fig. 1), with erosion of the petrosquamous temporal bone and sphenoid wing.
Magnetic resonance imaging demonstrating left middle fossa mass with avid gadolinium enhancement.
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Magnetic resonance imaging (MRI) of the brain demonstrated an avidly enhancing mass in the left middle fossa, with mass effect on the left temporal lobe and effacement of the lateral ventricle (Fig. 2).
Postoperative magnetic resonance imaging demonstrating gross total resection of left middle fossa mass.
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Gross total resection was achieved (Fig. 3).
Hematoxylin and eosin stain demonstrating densely cellular neoplasm with predominately spindle cell morphology, vascular proliferation, and focal mineralization.
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Pathology demonstrated a densely cellular neoplasm with predominately spindle cell morphology in a collagen-containing stroma, focal areas of hemangiopericytoma-like vascular proliferation, and focal mineralization (Fig. 4).
High power view of hematoxylin and eosin stain demonstrating densely cellular neoplasm with high mitotic index, areas of necrosis, and regions of cartilage formation.
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Well-defined regions of cartilage formation were noted (Fig. 5).