Assertion: foramen magnum | /r/CapableOf | represent only 2%–3% of all meningiomas
Facets:
value: at the foramen magnum
type: LOCATION
Source sentences:
text: Foramen magnum meningiomas (FMMs) represent only 2%–3% of all meningiomas but nearly 75% of all benign extramedullary lesions at the foramen magnum.