Solitary fibrous tumor of the meninges

We report a case of solitary fibrous tumor (SFT) of the meninges. SFTs have been initially described in the pleura. SFTs show similar histological fin dings as in other locations. SFTs shaw a diffuse positive staining for vime ntin and CD34. Meningeal SFTs have usually a favourable outcome. These tumo rs have to be essentially distinguished from hemangiopericytomas and fibrou s meningiomas. Immunostaining for CD34 is of value for this purpose. CD34 e xpression is often patchy and weaker in hemangiopericytomas whereas it is r arely observed in fibrous meningiomas. It is of great interest to isolate S FTs from hemangiopericytomas because of their favourable outcome.