Asian Pacific Journal of Cancer Prevention

Asian Pacific Journal of Cancer Prevention (아시아태평양암예방학회)
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Neoadjuvant Treatment with Preoperative Radiotherapy for Extremity Soft Tissue Sarcomas: Long-Term Results from a Single Institution in Turkey

  • Dincbas, Fazilet Oner (Department of Radiation Oncology, Cerrahpasa Medical Faculty, Istanbul University) ;
  • Oksuz, Didem Colpan (Department of Radiation Oncology, Cerrahpasa Medical Faculty, Istanbul University) ;
  • Yetmen, Ozlem (Department of Radiation Oncology, Lutfi Kirdar Kartal Training and Research Hospital) ;
  • Hiz, Murat (Department of Orthopedic Surgery, Cerrahpasa Medical Faculty, Istanbul University) ;
  • Dervisoglu, Sergulen (Department of Pathology, Cerrahpasa Medical Faculty, Istanbul University) ;
  • Turna, Hande (Department of Medical Oncology, Cerrahpasa Medical Faculty, Istanbul University) ;
  • Kantarci, Fatih (Department of Radiology, Cerrahpasa Medical Faculty, Istanbul University) ;
  • Mandel, Nil Molinas (Department of Medical Oncology, VKV American Hospital) ;
  • Koca, Sedat (Department of Radiation Oncology, Faculty of Medicine Bahcesehir University)
  • Published : 2014.02.28
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Abstract

Background: To assess the long term clinical outcome of preoperative radiotherapy with or without chemotherapy followed by limb sparing surgery in patients with non-metastatic soft tissue sarcomas (STS) of the extremities. Materials and Methods: Sixty patients with locally advanced STS were retrospectively analyzed. The median tumor diameter was 12 cm. All patients were treated with preoperative radiotherapy delivered with two different fractionation schedules (35Gy/10fr or 46-50Gy/23-25fr). Neoadjuvant chemotherapy was added to 44 patients with large and/or high grade tumors. Surgery was performed 2-6 weeks after radiotherapy. Chemotherapy was completed up to 6 courses after surgery in patients who had good responses. Results: Median follow-up time was 67 months (8-268 months). All of the patients had limb sparing surgery. The 5-year local control (LC), disease free (DFS) and overall survival (OSS) rates for all of the patients were 81%, 48.1% and 68.3% respectively. 5-year LC, DFS and cause specific survival (CSS) were 81.7%, 47%, 69.8%, and 80%, 60%, 60% in the chemoradiotherapy and radiotherapy groups, respectively. On univariate analysis, patients who were treated with hypofractionation experienced significantly superior LC, DFS and CSS rates with similar rates of late toxicity when compared with patients who were treated with conventional fractionation and statistical significance was retained on multivariate analysis. Conclusions: Treatment results are consistent with the literature. As neoadjuvant chemoradiotherapy provides effective LC and CSS with acceptable morbidity, it should be preferred for patients with large and borderline resectable STS.

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References

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