Multiple sections show cellular meningeal tumor formed of plump spindle meningeal cells with indistinct cellular borders and focally arranged in whorly patterns with many small onion-bulb structures and some psammoma bodies. No evidence of malignancy. This is a WHO grade I meningioma.
History of headache and convulsion for the last few months underwent surgical resection of a major, well-defined, greyish, and firm-to-hard mass measuring approximately 5 cm located at the convex of meninges, with a provisional clinical diagnosis of meningioma.
Soft tissue fragments collectively measured 8x7x2 cm, the largest measuring 3.5x3x2 cm.
Brain tumor, excision biopsy: