A benign tumor formed of proliferating fibroblastic meningothelial cells with focal whorling. Cytoplasm is scanty and cell borders are ill-defined. This is a WHO grade 1 tumor. No evidence of malignancy.
Well-defined extra-axial mass in the right posterior fossa with broad tentorial attachment.
Soft tissue fragments collectively measured 4.5x4x1.2 cm, totally embedded.
Posterior fossa extra-axial SOL, excision biopsy: