FIG 1. Hydroxyapatite microparticles (arrow) are seen in small arteries in meningioma with mild inflammatory response and lymphocytic infiltration in the perivascular spaces (hematoxylin and eosin; original magnification, x100).
FIG 1. Hydroxyapatite microparticles (arrow) are seen in small arteries in meningioma with mild inflammatory response and lymphocytic infiltration in the perivascular spaces (hematoxylin and eosin; original magnification, x100).