The Results of Primary Radiotherapy following Breast-Conserving Surgery for Early Breast Cancer

조기 유방암에서 보존적 수술후 방사선치료성적

  • Koh Kyoung Hwan (Department of Therapeutic Radiology, Korea Cancer Center Hospital) ;
  • Kim Mi Sook (Department of Therapeutic Radiology, Korea Cancer Center Hospital) ;
  • Yoo Seong Yul (Department of Therapeutic Radiology, Korea Cancer Center Hospital) ;
  • Cho Chul Koo (Department of Therapeutic Radiology, Korea Cancer Center Hospital) ;
  • Kim Jae Young (Department of Therapeutic Radiology, Korea Cancer Center Hospital) ;
  • Kim Yong Kyu (Department of Surgery, Korea Cancer Center Hospital) ;
  • Moon Nan Mo (Department of Surgery, Korea Cancer Center Hospital) ;
  • Paik Nam Sun (Department of Surgery, Korea Cancer Center Hospital) ;
  • Lee Jong Inn (Department of Surgery, Korea Cancer Center Hospital) ;
  • Choi Dong Wook (Department of Surgery, Korea Cancer Center Hospital)
  • Published : 1995.06.01

Abstract

Purpose: Primary radiation therapy following breast-conserving surgery has been an accepted alternative to mastectomy during the past 2 decades. In this country, however, the practice of conservative therapy for early invasive breast cancer has not been generalized yet. The purpose of this report was to evaluate the results and complications of breast conservation therapy in Korean Cancer Center Hospital(KCCH). Materials and Methods: From January 1987 to December 1989. 45 Patients with early breast cancer treated with conservative treatment in KCCH were studied retrospectively Median follow up was 54 months(range, 4 to 82 months) . All patients received partial mastectomy (biopsy, tumorectomy. or quadrantectomy) and radiation therapy. Twenty eight patients received axillary dissection The breast was treated with two opposing tangential fields (total 50 Gy or 50.4 Gy in 5 weeks with daily target dose of 2 Gy or 1.8 Gy) Thirty patients received chemotherapy before and after radio-therapy Eleven patients received hormonal therapy. Results: Five-year survival rate, 5-rear disease free survival rate and 5-year local control rate were 87.2%, 86.5% and 97.6%,$ respectively. Administration of systemic Therapy (chemotherapy or hormonal therapy) correlated with good prognosis but statistically not significant (0.05 < p < 0.1). The severe late complication rate was 8.9% Conclusion: Primary radiation therapy following breast-conserving surgery for early breast cancer is an alternative treatment comparing to radical treatment. Long term follow-up and more patients collection is needed to evaluate the Prognostic factor and cosmetic outcome.

목적: 조기 유방암에서 보존적 수술후 방사선치료는 외국에서 과거 20여년 동안 근치적 수술과 비슷한 생존율을 보였다. 그러나 아직 우리 나라에서는 보편화되지는 못한 실정이다. 이 논문은 원자력병원에서 시행한 조기 유방암환자에서 보존적 수술의 성적 및 부작용의 결과를 알기 위함이다. 방법: 1987년 1월부터 1989년 12월까지 원자력 병원 치료방사선과에서 보존적 수술후 방사선치료를 받은 조기 유방암 환자 45명에 대해 후향적 연구를 시행하였다. 추적 관찰기간은 4-82개월이었고 중앙값은 54개월이었다. 수술은 조직 생검만 시행한 경우 및 Tumorectomy 또는 Quadrantectomy를 시행한 경우가 있었다. 28예에서 액와림프절 박리를 시행하였다. 방사선 치료는 전유방에 Tangential field로 하루 1.8-2 Gy씩 총 50 또는 50.4 Gy를 조사하였다. 항암 요법은 30예의 환자에서 시행되었고 호르몬 치료는 11예에서 시행되었다. 결과: 5년 생존율, 5년 무병생존율 및 5년 국소제어율은 각각 87.2%, 86.5%, 및 97.6%였다. 전신 요법을 시행하는 군이 시행하지 않은 군에 비하여 5년 생존율에서 좋은 성적을 보였으나 통계학적인 의미는 없었다 (0.05

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