• World Neurosurg · Jul 2024

    Earlier Radiation Is Associated with Improved 1-Year Survival After Metastatic Spine Tumor Surgery.

    • Hani Chanbour, Jeffrey W Chen, Gabriel A Bendfeldt, GangavarapuLakshmi SuryatejaLSVanderbilt University, School of Medicine, Nashville, Tennessee, USA., Mahmoud Ahmed, Silky Chotai, Leo Y Luo, Richard A Berkman, Amir M Abtahi, Byron F Stephens, and Scott L Zuckerman.
    • Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
    • World Neurosurg. 2024 Jul 1; 187: e509e516e509-e516.

    ObjectiveIn patients undergoing metastatic spine surgery, we sought to 1) report time to postoperative radiation therapy (RT), 2) describe the predictive factors of time to postoperative RT, and 3) determine if earlier postoperative RT is associated with improved local recurrence (LR) and overall survival (OS).MethodsA single-center retrospective cohort study was undertaken of all patients undergoing spine surgery for extradural metastatic disease and receiving RT within 3 months postoperatively between January 2010 and January 2021. Time to postoperative RT was dichotomized at <1 month versus 1-3 months. The primary outcomes were LR, OS, and 1-year survival. Secondary outcomes were wound complication, Karnofsky Performance Status, and modified McCormick Scale (MMS) score. Regression analyses controlled for age, body mass index, tumor size, preoperative RT, preoperative/postoperative chemotherapy, and type of RT.ResultsOf 76 patients undergoing spinal metastasis surgery and receiving postoperative RT within 3 months, 34 (44.7%) received RT within 1 month and 42 (55.2%) within 1-3 months. Patients with larger tumor size (β = -3.58; 95% confidence interval [CI], -6.59 to -0.57; P = 0.021) or new neurologic deficits (β = -16.21; 95% CI, -32.21 to -0.210; P = 0.047) had a shorter time to RT. No significant association was found between time to RT and LR or OS on multivariable logistic/Cox regression. However, patients who received RT between 1 and 3 months had a lower odds of 1-year survival compared with those receiving RT within 1 month (odds ratio, 0.18; 95% CI, 0.04-0.74; P = 0.022). Receiving RT within 1 month versus 1-3 months was not associated with wound complications (7.1% vs. 2.9%; P = 0.556) (odds ratio, 4.40; 95% CI, 0.40-118.0; P = 0.266) or Karnofsky Performance Status/modified McCormick Scale score.ConclusionsSpine surgeons, oncologists, and radiation oncologists should make every effort to start RT within 1 month to improve 1-year survival after metastatic spine tumor surgery.Copyright © 2024. Published by Elsevier Inc.

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