The Necessity of Early Adjuvant Radiotherapy for Better Outcomes in the Treatment of a Desmoid Tumor

데스모이드 종양에 대한 조기 방사선치료의 필요성

  • Lee, Me-Yeon (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Chang, Ah-Ram (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Kim, Hak-Jae (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Kim, Kyu-Bo (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Kim, Jin-Ho (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Park, Charn-Il (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Ha, Sung-Whan (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Wu, Hong-Gyun (Department of Radiation Oncology, Seoul National University College of Medicine) ;
  • Kim, Il-Han (Department of Radiation Oncology, Seoul National University College of Medicine)
  • 이미연 (서울대학교 의과대학 방사선종양학교실) ;
  • 장아람 (서울대학교 의과대학 방사선종양학교실) ;
  • 김학재 (서울대학교 의과대학 방사선종양학교실) ;
  • 김규보 (서울대학교 의과대학 방사선종양학교실) ;
  • 김진호 (서울대학교 의과대학 방사선종양학교실) ;
  • 박찬일 (서울대학교 의과대학 방사선종양학교실) ;
  • 하성환 (서울대학교 의과대학 방사선종양학교실) ;
  • 우홍균 (서울대학교 의과대학 방사선종양학교실) ;
  • 김일한 (서울대학교 의과대학 방사선종양학교실)
  • Published : 2007.12.30

Abstract

Purpose: This retrospective study was conducted to assess outcome and to determine the prognostic factors in patients with a desmoid tumor treated with postoperative radiotherapy. Materials and Methods: Twenty-seven patients with a desmoid tumor who were treated with postoperative radiotherapy between June 1984 and October 2005 were analyzed. There were 13 male and 14 female patients. The age of the patients ranged from 3 to 79 years (median age, 28 years). Tumors were located in an extra-abdominal area (21 cases), and in the abdominal walls (6 cases). The tumor size ranged from 2.5 to 25 cm (median size, 7.5 cm) in the largest linear dimension. Thirteen cases received radiotherapy after initial surgery, and 14 recurrent cases received radiotherapy after additional surgery. The total radiation dose given was $45{\sim}66$ Gy (median dose, 59.4 Gy), and the fraction size was $1.8{\sim}2.0$ Gy. Results: The median follow-up period was 61 months (range, $12{\sim}203$ months). Two patients developed local progression and six patients experienced local recurrence. The 5-year disease-free survival rate and the 5-year progression-free survival rate were 61 % and 70%, respectively. Wide local excision was associated with better disease free survival with statistical significance (p=0.028). Radiotherapy after initial surgery (p=0.046) and a higher radiation dose of more than 60 Gy (p=0.049) were associated with better progression free survival with statistical significance. At the time of the last follow-up, the number of additional surgeries was higher in patients that received radiotherapy after reoperation (p<0.001). Conclusion: Radiotherapy after the initial operation improved local control and decreased the number of subsequent operations. Thus, postoperative radiotherapy after an initial operation is recommended in patients with a high risk of recurrence for a desmoid tumor.

목적: 데스모이드 종양의 수술 후 방사선치료 성적을 분석하고 예후인자를 평가하기 위하여 후향적 연구를 진행하였다. 대상 및 방법: 1984년 5월부터 2005년 10월까지 서울대학교병원에서 데스모이드 종양으로 수술 후 방사선치료를 시행 받은 환자 27명에 대한 의무기록을 분석하였다. 남자 13예, 여자 14예였으며 연령은 $3{\sim}79$세였다(중앙값, 28세). 종양은 복부 외(21예), 복벽(5예)에 위치하였고 종양의 크기는 장경 기준 $2.5{\sim}25$ cm (중앙값, 7.5 cm)였다. 첫 수술 후 방사선치료를 받은 환자가 13예, 국소 재발 종양에 대한 반복 수술 후 방사선치료를 받은 환자가 14예였다. 방사선치료는 분할 선량 $1.8{\sim}2.0$ Gy로 총 $45{\sim}66$ Gy (중앙값, 59.4 Gy)를 조사하였다. 결 과: 추적관찰 기간의 중앙값은 61개월(범위, $12{\sim}203$개월)이었다. 병변의 국소 진행은 2예에서, 국소 계발은 5예에서 관찰되었다. 5년 무병생존율과 5년 무진행 생존율은 각각 61%와 70%였다. 다변량 분석 결과 광범위절제술을 시행한 경우 용적축소수술을 시행한 경우보다 무병생존율이 높았고(p=0.028), 첫 수술 후 방사선치료를 시행하는 경우와(p=0.046) 방사선 선량이 60 Gy이상인 경우에(p=0.049) 무진행 생존율이 높았다. 첫 수술 후 방사선치료를 시행한 경우 최종 관찰까지 수술 횟수가 중앙값 1회(범위, $1{\sim}3$회)였으나 첫 수술 후 방사선치료를 시행하지 않은 경우 수술 횟수가 중앙값 3.5회(범위, $2{\sim}6$회)였다(p<0.001). 결 론: 처음 진단 시 수술 후 방사선치료를 시행한 경우 국소 제어율은 높았고 총 수술 횟수는 적었다. 따라서 재발의 위험도가 높은 용적축소수술을 받은 환자 등에서는 수술 후 조기 방사선치료의 시행이 바람직하다.

Keywords

References

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