A benign tumor formed of proliferating fibroblastic meningothelial cells with focal whorling. Tumor shows few foci of microcalcification (psammoma bodies). Cytoplasm is scanty and cell borders are ill-defined. No evidence of atypia or malignancy. This is a WHO grade I meningioma.
Second brain tumor debulking surgery one year after the initial procedure, resulting in the removal of a 250-gram tissue sample
Soft tissue fragments collectively measured 18x15x3.3 cm, totally embedded.
Intracranial mass, excision biopsy: