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A 66 year-old woman presented with a change in her personality. Her exam suggested a mild left hemiparesis.
Axial MRI Scans (Left - T2 weighted; Middle - T1 weighted; Right - T1 weighted with gadolinium). Note the large, well demarcated mass which is dural based and compressing the adjacent frontal lobe. The mass is isodense on T1 but strongly enhances with contrast. Also note the large area of surrounding edema and associated mass effect, best seen on the T2-weighted image. This is the typical appearance of a meningioma. Meningiomas are common tumors. They are typically benign histologically, and treatable with surgical resection if they are in an accessible location.
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