Thoracic intradural extramedullary solitary fibrous tumor: A case report and review of the literature.

Background: Solitary fibrous tumors (SFTs) are rare neoplasms of mesenchymal origin that is thought to arise from pericapillary (Zimmermann) cells. They most commonly occur in the visceral pleura. Here, a 79-year-old male presented with myelopathy attributed to a solitary T8 intradural extramedullary SFT.

Case description: A 79-year-old male presented with progressive paraparesis over several months. A magnetic resonance imaging of the thoracic spine revealed a left-sided, eccentric intradural extramedullary mass at the T8 level. At surgery, the lesion was densely adherent to the cord; nevertheless, it was successfully removed in toto. Postoperatively, the patient transiently experienced increased bilateral lower extremity numbness. However, 1 year later, he was intact and the follow-up studies confirmed no residual/recurrent lesion. Notably, the histopathology and immunochemistry examinations confirmed the diagnosis of a SFT, classified as CNS WHO Grade 1.

Conclusion: Although intradural extramedullary SFTs are exceedingly rare, we encountered such a lesion at the T8 level that was grossly removed without postoperative neurological sequelae.