PC: To download this image
1. Right click on the image.
2. Select "Save Picture As..." from the pull down menu.
3. Choose a destination file to save the image into.
4. Press save.
MAC: To download this image
1. CTRL click on the image.
2. Select a location to save the image to from the pull down menu.
N0014034CreditWellcome Photo Library, Wellcome Images
Magnetic resonance image (MRI), axial slice, showing meningioma at cerebellopontine angle. This is a relatively common neoplasm of the central nervous system that arises from arachnoidal cells. The majority are well differentiated vascular tumours which grow slowly and have a low potential to be invasive, although malignant subtypes occur. Meningiomas have a predilection to arise from the parasagittal region, cerebral convexity, sphenoidal ridge, olfactory groove, and spinal canal. They tend to present in the fourth to sixth decades of life with signs indicative of a slowly progressive mass lesion. Specific clinical manifestations depend on the location of the tumour, but may include intracranial hypertension, cranial neuropathies, ataxia, and other focal neurologic signs. Magnetic resonance imaging Collection:Wellcome Images Library reference no.:NMSB Frame No NOVIDEO