meningioma

15-20% of all brain tumors (2nd to gliomas)
F > M

most often detected in middle age
those detected earlier are:

in unusual locations
often associated with neurofibromatosis
more often malignant

90% supratentorial

33-50% parasagittal

        convexity               foramen magnum
        sphenoid wing           middle cranial fossa
        olfactory groove        torcular Herophili
        tuberculum sellae       falx
        petrous ridge           ventricles

Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 September 2006