Soft tissue sarcomas treated with postoperative external beam radiotherapy with and without low-dose-rate brachytherapy

Stephen F. Andrews, Penny R. Anderson, Burton L. Eisenberg, Alexandra L. Hanlon, Alan Pollack

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Purpose Patients treated for soft tissue sarcoma with adjuvant low-dose-rate brachytherapy (BT) plus external beam radiotherapy (EBRT) were compared with those treated with adjuvant EBRT alone. The hypothesis was that higher doses from postoperative BT plus EBRT would improve local tumor control. Methods and materials The medical records of 130 sarcoma patients definitively treated between February 1983 and February 2001 were reviewed. Of these, 25 patients received BT followed by EBRT, and 61 were treated with EBRT alone. Overall survival, freedom from distant metastasis, and local control were calculated using Kaplan-Meier estimates. Univariate and multivariate analyses were performed. The mean postoperative radiation dose with EBRT alone was 59 Gy (range, 50-74) and 50 Gy (range, 40-70 Gy) when low-dose-rate BT was included. The mean implant dose was 16 Gy (range, 10-20 Gy). Results The 5-year Kaplan-Meier estimate for overall survival for BT plus EBRT and EBRT alone was 82% and 72% (p = 0.93), respectively. The 5-year freedom from distant metastasis and freedom from local failure rate for BT plus EBRT vs. EBRT alone was 90% vs. 78% (p = 0.15) and 90% vs. 83% (p = 0.25), respectively. In the univariate subset analysis, Stage III patients had better local control at 5 years (100% vs. 62%, p = 0.03) and a trend was noted for better local control for high-grade tumors (100% vs. 74%, p = 0.09) if treated with BT plus EBRT. No statistically significant predictors were found on multivariate analysis for local control. The median follow-up was 62 months. Conclusion Local control at 5 years was high in both groups at 83% and 90%. On univariate analysis, Stage III patients had improved 5-year local control and a trend was found toward better local control for high-grade tumors. On multivariate analysis, no predictors were found for better local control; however, the numbers of Stage III and high-grade patients were small, which may have masked a possible benefit of BT plus EBRT in this population.

Original languageEnglish
Pages (from-to)475-480
Number of pages6
JournalInternational Journal of Radiation Oncology Biology Physics
Volume59
Issue number2
DOIs
StatePublished - Jun 1 2004
Externally publishedYes

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Brachytherapy
Sarcoma
radiation therapy
Radiotherapy
cancer
dosage
grade
tumors
Multivariate Analysis
Kaplan-Meier Estimate
metastasis
Neoplasm Metastasis
trends
Neoplasms
Survival
estimates
predictions
set theory
Medical Records
Radiation

Keywords

  • Brachytherapy
  • Local control
  • Radiotherapy
  • Sarcoma

ASJC Scopus subject areas

  • Oncology
  • Radiology Nuclear Medicine and imaging
  • Radiation

Cite this

Soft tissue sarcomas treated with postoperative external beam radiotherapy with and without low-dose-rate brachytherapy. / Andrews, Stephen F.; Anderson, Penny R.; Eisenberg, Burton L.; Hanlon, Alexandra L.; Pollack, Alan.

In: International Journal of Radiation Oncology Biology Physics, Vol. 59, No. 2, 01.06.2004, p. 475-480.

Research output: Contribution to journalArticle

Andrews, Stephen F. ; Anderson, Penny R. ; Eisenberg, Burton L. ; Hanlon, Alexandra L. ; Pollack, Alan. / Soft tissue sarcomas treated with postoperative external beam radiotherapy with and without low-dose-rate brachytherapy. In: International Journal of Radiation Oncology Biology Physics. 2004 ; Vol. 59, No. 2. pp. 475-480.
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abstract = "Purpose Patients treated for soft tissue sarcoma with adjuvant low-dose-rate brachytherapy (BT) plus external beam radiotherapy (EBRT) were compared with those treated with adjuvant EBRT alone. The hypothesis was that higher doses from postoperative BT plus EBRT would improve local tumor control. Methods and materials The medical records of 130 sarcoma patients definitively treated between February 1983 and February 2001 were reviewed. Of these, 25 patients received BT followed by EBRT, and 61 were treated with EBRT alone. Overall survival, freedom from distant metastasis, and local control were calculated using Kaplan-Meier estimates. Univariate and multivariate analyses were performed. The mean postoperative radiation dose with EBRT alone was 59 Gy (range, 50-74) and 50 Gy (range, 40-70 Gy) when low-dose-rate BT was included. The mean implant dose was 16 Gy (range, 10-20 Gy). Results The 5-year Kaplan-Meier estimate for overall survival for BT plus EBRT and EBRT alone was 82{\%} and 72{\%} (p = 0.93), respectively. The 5-year freedom from distant metastasis and freedom from local failure rate for BT plus EBRT vs. EBRT alone was 90{\%} vs. 78{\%} (p = 0.15) and 90{\%} vs. 83{\%} (p = 0.25), respectively. In the univariate subset analysis, Stage III patients had better local control at 5 years (100{\%} vs. 62{\%}, p = 0.03) and a trend was noted for better local control for high-grade tumors (100{\%} vs. 74{\%}, p = 0.09) if treated with BT plus EBRT. No statistically significant predictors were found on multivariate analysis for local control. The median follow-up was 62 months. Conclusion Local control at 5 years was high in both groups at 83{\%} and 90{\%}. On univariate analysis, Stage III patients had improved 5-year local control and a trend was found toward better local control for high-grade tumors. On multivariate analysis, no predictors were found for better local control; however, the numbers of Stage III and high-grade patients were small, which may have masked a possible benefit of BT plus EBRT in this population.",
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T1 - Soft tissue sarcomas treated with postoperative external beam radiotherapy with and without low-dose-rate brachytherapy

AU - Andrews, Stephen F.

AU - Anderson, Penny R.

AU - Eisenberg, Burton L.

AU - Hanlon, Alexandra L.

AU - Pollack, Alan

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N2 - Purpose Patients treated for soft tissue sarcoma with adjuvant low-dose-rate brachytherapy (BT) plus external beam radiotherapy (EBRT) were compared with those treated with adjuvant EBRT alone. The hypothesis was that higher doses from postoperative BT plus EBRT would improve local tumor control. Methods and materials The medical records of 130 sarcoma patients definitively treated between February 1983 and February 2001 were reviewed. Of these, 25 patients received BT followed by EBRT, and 61 were treated with EBRT alone. Overall survival, freedom from distant metastasis, and local control were calculated using Kaplan-Meier estimates. Univariate and multivariate analyses were performed. The mean postoperative radiation dose with EBRT alone was 59 Gy (range, 50-74) and 50 Gy (range, 40-70 Gy) when low-dose-rate BT was included. The mean implant dose was 16 Gy (range, 10-20 Gy). Results The 5-year Kaplan-Meier estimate for overall survival for BT plus EBRT and EBRT alone was 82% and 72% (p = 0.93), respectively. The 5-year freedom from distant metastasis and freedom from local failure rate for BT plus EBRT vs. EBRT alone was 90% vs. 78% (p = 0.15) and 90% vs. 83% (p = 0.25), respectively. In the univariate subset analysis, Stage III patients had better local control at 5 years (100% vs. 62%, p = 0.03) and a trend was noted for better local control for high-grade tumors (100% vs. 74%, p = 0.09) if treated with BT plus EBRT. No statistically significant predictors were found on multivariate analysis for local control. The median follow-up was 62 months. Conclusion Local control at 5 years was high in both groups at 83% and 90%. On univariate analysis, Stage III patients had improved 5-year local control and a trend was found toward better local control for high-grade tumors. On multivariate analysis, no predictors were found for better local control; however, the numbers of Stage III and high-grade patients were small, which may have masked a possible benefit of BT plus EBRT in this population.

AB - Purpose Patients treated for soft tissue sarcoma with adjuvant low-dose-rate brachytherapy (BT) plus external beam radiotherapy (EBRT) were compared with those treated with adjuvant EBRT alone. The hypothesis was that higher doses from postoperative BT plus EBRT would improve local tumor control. Methods and materials The medical records of 130 sarcoma patients definitively treated between February 1983 and February 2001 were reviewed. Of these, 25 patients received BT followed by EBRT, and 61 were treated with EBRT alone. Overall survival, freedom from distant metastasis, and local control were calculated using Kaplan-Meier estimates. Univariate and multivariate analyses were performed. The mean postoperative radiation dose with EBRT alone was 59 Gy (range, 50-74) and 50 Gy (range, 40-70 Gy) when low-dose-rate BT was included. The mean implant dose was 16 Gy (range, 10-20 Gy). Results The 5-year Kaplan-Meier estimate for overall survival for BT plus EBRT and EBRT alone was 82% and 72% (p = 0.93), respectively. The 5-year freedom from distant metastasis and freedom from local failure rate for BT plus EBRT vs. EBRT alone was 90% vs. 78% (p = 0.15) and 90% vs. 83% (p = 0.25), respectively. In the univariate subset analysis, Stage III patients had better local control at 5 years (100% vs. 62%, p = 0.03) and a trend was noted for better local control for high-grade tumors (100% vs. 74%, p = 0.09) if treated with BT plus EBRT. No statistically significant predictors were found on multivariate analysis for local control. The median follow-up was 62 months. Conclusion Local control at 5 years was high in both groups at 83% and 90%. On univariate analysis, Stage III patients had improved 5-year local control and a trend was found toward better local control for high-grade tumors. On multivariate analysis, no predictors were found for better local control; however, the numbers of Stage III and high-grade patients were small, which may have masked a possible benefit of BT plus EBRT in this population.

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