Despite the age, - could this be a rhabdoid meningioma ?

I presume that this tumour was partly superficial/extra-axial. I think meningioma is a possibility but I can't see any definite meningothelial differentiation. There are a few cells with eccentrically placed nuclei and homogeneous eosinophilic cytoplasm but I'd have expected these to be more numerous in a rhabdoid meningioma, and extensive fibrosis would be very unusual for that diagnosis. I am struck by the difference between the appearance of the very elongated, spindle-shaped cells in DSCN6338 and that of the rounded, pleomorphic cells in DSCN6333 and DSCN6337. Are the non-spindled, pleomorphic cells within reticulin-free islands? If so, I'd think of a desmoplastic infantile astrocytoma or desmoplastic infantile ganglioglioma; these usually occur in much younger patients but have been reported in adolescents. Immunohistochemistry for GFAP and a neuronal antigen (e.g. neurofilament protein or synaptophysin) would be helpful, if available.

I was thinking in terms of a glioma - ganglioglioma, pleomorphic xanthoastrocytoma.