Fig. 2

Photomicrographs of tissue samples of dura infiltrated by meningioma of the meningothelial type grade I obtained from a brain lesion following a left-left frontotemporal craniectomy. Mast cells were stained immunohistochemically for the presence of CD117 (brown color). a Unaffected dura showing two mast cells. b Dura infiltrated by meningioma cells showing a number of mast cells (brown color). Magnification = ×200