Lipoma of conus medullaris without spinal dysraphism in an adult.

Meningeal solitary fibrous tumor (SFT) is a rare tumor and is different from fibroblastic meningiomas (FM) and hemangiopericytoma (HPC). SFTs account for 0.09% of all meningeal tumors.[1-3] Compared to meningiomas the SFTs show a predilection for the posterior fossa and spine.[1,2] Most of these tumors are benign, however, local recurrence have been reported.[3] Gengler and Guillou[4] in a review described SFT as one of the HPClike tumor of meninges.[4] Differentiation of SFT from HPC is essential because of the therapeutic implications. HPC is a dural-based aggressive mesenchymal tumor and 15-year recurrence rate is 76%.[5] Postoperative radiotherapy therefore is indicated in patients with HCP, whereas the SFTs present a benign clinical course similar to meningiomas and do not recur unless subtotally resected. [2,3] We reported this case of giant SFT of middle cranial fossa because of many unusual features: Rare location, local aggression, and bony erosion. The other unusual feature was internal carotid artery block. Although aggressive looking on imaging, it could be totally excised.