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Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy

  • Authors:
    • Joseph R. Linzey
    • Michael J. Strong
    • Varun G. Kathawate
    • Peyton E. Goethe
    • Lila R. Tudrick
    • Johan Lee
    • Arushi Tripathy
    • Sravanthi Koduri
    • Ayobami L. Ward
    • Oludotun Ogunsola
    • Mark M. Zaki
    • Rushikesh S. Joshi
    • Joseph R. Evans
    • William C. Jackson
    • Nicholas J. Szerlip
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery, University of Michigan, Ann Arbor, MI 48109, USA, University of Michigan Medical School, University of Michigan Hospital, Ann Arbor, MI 48109, USA, Department of Radiation Oncology, University of Michigan, Ann Arbor, MI 48109, USA
    Copyright: © Linzey et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 5
    |
    Published online on: October 16, 2024
       https://doi.org/10.3892/ol.2024.14751
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Abstract

Spinal metastases can be contained in the bone or have epidural spread. Whether the extent of epidural involvement changes tumor response to therapy is unknown. The decision of when to treat disease progression with focal radiation therapy with or without surgery vs. systemic therapy is debated. The present study compared outcomes and local tumor control after stereotactic body radiation therapy (SBRT) between patients with spine metastases localized to the bone (Bilsky 0) vs. patients with mild epidural spread (Bilsky 1). A retrospective analysis of a prospectively maintained database of adult oncological patients who underwent SBRT to the spine at a single, large, tertiary care facility from August 2010 to January 2021 was performed. Patients with Bilsky grades 1a, 1b and 1c were grouped and compared. Approximately half (53.7%) of the 255 patients identified had Bilsky grade 1 epidural disease. Of the 311 spine treatment sites, 86 (27.7%) had a radiosensitive histology, 116 (37.3%) had intermediate radiosensitivity and 109 (35.0%) had a radioresistant histology. Patients with Bilsky grade 1 were more predisposed to receive surgery followed by SBRT compared with those with Bilsky grade 0 (21.0% vs. 6.3%; P=0.0002). Patients with Bilsky grade 0 compression had 92.0% local control at 12 months and 85.8% local control at 24 months; patients with Bilsky grade 1 compression had 85.6% local control at 12 months and 77.6% local control at 24 months. Biologically effective dose and infield progression between patients presenting with Bilsky grade 0 and 1 compression were not statistically different. Local control rates did not differ significantly between Bilsky grade 0 and grade 1 patients following treatment with spinal SBRT. However, patients with grade 1 disease were more likely to receive surgery before SBRT. Overall, evidence indicates that patients may benefit from treatment with SBRT before epidural disease progresses to requiring separation surgery.
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Copy and paste a formatted citation
Spandidos Publications style
Linzey JR, Strong MJ, Kathawate VG, Goethe PE, Tudrick LR, Lee J, Tripathy A, Koduri S, Ward AL, Ogunsola O, Ogunsola O, et al: Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy. Oncol Lett 29: 5, 2025.
APA
Linzey, J.R., Strong, M.J., Kathawate, V.G., Goethe, P.E., Tudrick, L.R., Lee, J. ... Szerlip, N.J. (2025). Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy. Oncology Letters, 29, 5. https://doi.org/10.3892/ol.2024.14751
MLA
Linzey, J. R., Strong, M. J., Kathawate, V. G., Goethe, P. E., Tudrick, L. R., Lee, J., Tripathy, A., Koduri, S., Ward, A. L., Ogunsola, O., Zaki, M. M., Joshi, R. S., Evans, J. R., Jackson, W. C., Szerlip, N. J."Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy". Oncology Letters 29.1 (2025): 5.
Chicago
Linzey, J. R., Strong, M. J., Kathawate, V. G., Goethe, P. E., Tudrick, L. R., Lee, J., Tripathy, A., Koduri, S., Ward, A. L., Ogunsola, O., Zaki, M. M., Joshi, R. S., Evans, J. R., Jackson, W. C., Szerlip, N. J."Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy". Oncology Letters 29, no. 1 (2025): 5. https://doi.org/10.3892/ol.2024.14751
Copy and paste a formatted citation
x
Spandidos Publications style
Linzey JR, Strong MJ, Kathawate VG, Goethe PE, Tudrick LR, Lee J, Tripathy A, Koduri S, Ward AL, Ogunsola O, Ogunsola O, et al: Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy. Oncol Lett 29: 5, 2025.
APA
Linzey, J.R., Strong, M.J., Kathawate, V.G., Goethe, P.E., Tudrick, L.R., Lee, J. ... Szerlip, N.J. (2025). Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy. Oncology Letters, 29, 5. https://doi.org/10.3892/ol.2024.14751
MLA
Linzey, J. R., Strong, M. J., Kathawate, V. G., Goethe, P. E., Tudrick, L. R., Lee, J., Tripathy, A., Koduri, S., Ward, A. L., Ogunsola, O., Zaki, M. M., Joshi, R. S., Evans, J. R., Jackson, W. C., Szerlip, N. J."Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy". Oncology Letters 29.1 (2025): 5.
Chicago
Linzey, J. R., Strong, M. J., Kathawate, V. G., Goethe, P. E., Tudrick, L. R., Lee, J., Tripathy, A., Koduri, S., Ward, A. L., Ogunsola, O., Zaki, M. M., Joshi, R. S., Evans, J. R., Jackson, W. C., Szerlip, N. J."Role of epidural disease in local control of spinal metastases treated with stereotactic body radiation therapy". Oncology Letters 29, no. 1 (2025): 5. https://doi.org/10.3892/ol.2024.14751
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