Supplementary Material for: Intraosseous Schwannoma Arising Within the Thoracic Vertebra: A Case Report

Introduction
Schwannomas are common benign tumors that develop in the peripheral nerves and are common in intradural extramedullary lesions of the spine. However, intraosseous schwannoma is extremely rare.
Case Presentation
A 24-year-old man experienced back pain for five months. Imaging revealed a lytic lesion with marginal sclerosis in the body of the 12th thoracic vertebra, with vertebral collapse, thinning, and bulging of the posterior margins of the vertebral body. Needle biopsy suggested a benign neurogenic tumor, and a total en bloc spondylectomy was performed. Postoperative pathological examination revealed an intraosseous schwannoma.
Conclusion
Although intraosseous schwannoma is rare, intraosseous vertebral schwannoma can occur, as observed in this case; therefore, clinicians should be aware of this condition and consider it as a differential diagnosis for vertebral tumors.