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case_images: Brain magnetic resonance imaging (MRI) with contrast.. The sagittal section of T1 sequence (image A) and coronal section of T1 sequence (image B) both demonstrate intensely enhancing extra-axial dural-based lesion along the frontal left hemisphere (yellow arrow).
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case_images: Initial brain MRI with contrast revealed an intensely enhancing extra-axial dural-based lesion along the left frontal hemisphere, causing mass effect, resultant vasogenic edema, and midline shift to the right [Fig. 1].
case_images: Microscopic examination of serial sections reveals diffuse proliferation of spindle cells with oval nuclei and pale cytoplasm; these cells form whorls with calcified stroma.
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case_images: Microscopic examination of serial sections revealed diffuse proliferation of spindle cells with oval nuclei and pale cytoplasm; these cells form whorls with calcified stroma [Fig. 2].
case_images: Postoperative computed tomography (CT) tissue window showed complete resolution of the space-occupying lesion with mild cerebral edema at the surgical site (yellow arrow). (A: Sagittal sequence, B: Axial sequence, C: Coronal sequence).
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case_images: After surgery, CT scans showed complete resolution of the space-occupying lesion with mild cerebral edema at the surgical site [Fig. 3].