|
A 66 year-old woman presented with a change in personality. Her exam suggested a mild left hemiparesis. |
| Meningioma (Frontal). (Left)
T2-weighted axial MRI; (Middle) T1-weighted axial MRI; (Right) T1-weighted with gadolinium
axial MRI. Note the large, well demarcated mass that is dural based and
compresses the adjacent frontal lobe. The mass is isointense on T1-weighted
images 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 that arise from the meninges and can occur within the spinal canal as well as intracranially. They are typically benign histologically, and can be surgically resected if they are in an accessible location. They are more common in women than men, and account for approximately 20% of all primary brain tumors. Similar to low grade gliomas, they grow very slowly. They may result in seizures, focal neurological signs, or both, depending on their location. Some of the more common locations for meningiomas include: ● Parasagittal (attached to the falx) |
Revised
11/30/06.
Copyrighted 2006. David C Preston