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Clinical Significance of Resection Type and Margin following Surgical Treatment for Primary Sarcoma of the Spine: A Multi-Center Retrospective Study

  • Journal of Korean Society of Spine Surgery
  • Abbr : J Kor Spine Sur
  • 2019, 26(4), pp.117-125
  • Publisher : Korean Society Of Spine Surgery
  • Research Area : Medicine and Pharmacy > Orthopedic Surgery
  • Published : December 31, 2019

Hyoungmin Kim 1 Sam Yeol Chang 1 Se-Jun Park 2 Chang, Bong-Soon ORD ID 3 Chong-Suh Lee 2 Choon-Ki Lee 4

1서울대학교 의과대학 정형외과학교실
2성균관대학교 의과대학 정형외과학교실
3서울대학교
4이춘기

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ABSTRACT

Study Design: A retrospective multi-center study. Objectives: To analyze oncological outcomes according to the resection type and surgical margin following surgical treatment for primary spinal sarcoma. Summary of Literature Review: Previous studies using registry databases have shown that surgery and negative margins were associated with improved survival for primary spinal sarcoma. However, few studies have comprehensively analyzed the clinical significance of the resection type and surgical margin for the oncological outcomes of this rare malignancy. Materials and Methods: We retrospectively reviewed consecutive patients who underwent surgical resection for primary spinal sarcoma between 1997 and 2016 at two tertiary medical centers. Overall survival and the occurrence of local recurrence and distant metastasis were compared between the groups using Kaplan-Meier curve analysis and the log-rank test. Results: Thirty-three patients (21 males,12 females) with a mean age of 45.1 years and a median follow-up of 36 months were included. There were 13 (39.4%) chondrosarcomas, 12 (36.4%) osteosarcomas, and eight different histological diagnoses. The cohort was categorized into four groups: 1) total en bloc resection with a negative margin (n=12; 36.4%), 2) total en bloc resection with a positive margin: (n=5; 15.2%), 3) total piecemeal resection (n=12; 36.4%), and 4) subtotal resection (n=4; 12.1%). Total en bloc resection with a negative margin was associated with improved overall survival (p=0.030) and less distant metastasis (p=0.025) and local recurrence (p=0.004). Conclusions: Achieving a negative margin through total en bloc resection, although technically demanding, improves oncological outcomes in primary spinal sarcoma. Key words: Primary spinal sarcoma, En bloc resection, Survival, Recurrence, Metastasis

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