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.