CD34 and meningioma: In additional, the SFTs of the hub, orbit and paranasal sinuses should be differentiated from fibroblast cell meningioma, from which we can observe island meningeal skin cells and grit in the spindle-shaped beam of tumor cells, and it can also be ruled out by positive immunohistochemical staining for EMA, CK and S-100 and negative staining for CD34 [50].