Solitary fibrous tumor of the dura


Solitary fibrous tumors of the dura are rare dural masses, histologically identical to solitary fibrous tumors found elsewhere, and composed of spindle cells thought to be of mesenchymal origin. 

The radiographic appearances are those of a well circumscribed mass arising from the dura (supratentorial convexity, falx and tentorium and posterior fossa). Unlike solitary fibrous tumors of the spinal cord, which most frequently arise from the cord itself and not the theca, parenchymal tumors of the brain are very rare.