TY - JOUR
T1 - Combined modality management of retroperitoneal sarcomas
T2 - A single-institution series of 121 patients
AU - Bishop, Andrew J.
AU - Zagars, Gunar K.
AU - Torres, Keila E.
AU - Hunt, Kelly K.
AU - Cormier, Janice N.
AU - Feig, Barry W.
AU - Ashleigh Guadagnolo, B.
N1 - Funding Information:
Supported in part by Cancer Center Support ( Core ) grant CA016672 to The University of Texas MD Anderson Cancer Center.
Publisher Copyright:
© 2015 Elsevier Inc.
PY - 2015/9/1
Y1 - 2015/9/1
N2 - Purpose The purpose of this study was to investigate local control, survival outcomes, and complication rates of patients treated with aggressive surgery and radiation therapy (RT) for retroperitoneal sarcomas (RPS). Methods and Materials We reviewed the medical records of 121 consecutive patients treated for RPS with surgery and RT between 1965 and 2012. The most common histology was liposarcoma (n=42; 35%). The median follow-up was 100 months (range: 20-467 months). Eighty-six patients (71%) were treated for initial presentation of RPS, and 35 patients (29%) presented with and were treated for RPS recurrence. RT was preoperative in 88 patients (73%; median dose: 50.4 Gy) and postoperative in 33 patients (27%; median dose: 55 Gy). Results Five-year local control and overall survival rates were 56% and 57%, respectively. Two factors were associated with higher risk of any intra-abdominal recurrence at 5 years: positive or uncertain margins (58% vs 30% for negative margins, P<.001; hazard ratio [HR]: 2.7; 95% confidence interval [CI]: 1.6-4.8) and disease recurrence after previous resection (76% vs 31% for de novo RPS, P<.001; HR: 4.4; 95% CI: 2.5-7.5). The 10-year complication rate was 5%, and RT-related complications were associated with postoperative RT (P<.001) and RT dose of 60 Gy (P<.001). Conclusions Intra-abdominal RPS recurrence continues to be a significant challenge despite the use of aggressive surgery and radiation therapy. Given the complications associated with postoperative radiation therapy, we recommend that preoperative radiation therapy is the preferred strategy when combined modality therapy is recommended.
AB - Purpose The purpose of this study was to investigate local control, survival outcomes, and complication rates of patients treated with aggressive surgery and radiation therapy (RT) for retroperitoneal sarcomas (RPS). Methods and Materials We reviewed the medical records of 121 consecutive patients treated for RPS with surgery and RT between 1965 and 2012. The most common histology was liposarcoma (n=42; 35%). The median follow-up was 100 months (range: 20-467 months). Eighty-six patients (71%) were treated for initial presentation of RPS, and 35 patients (29%) presented with and were treated for RPS recurrence. RT was preoperative in 88 patients (73%; median dose: 50.4 Gy) and postoperative in 33 patients (27%; median dose: 55 Gy). Results Five-year local control and overall survival rates were 56% and 57%, respectively. Two factors were associated with higher risk of any intra-abdominal recurrence at 5 years: positive or uncertain margins (58% vs 30% for negative margins, P<.001; hazard ratio [HR]: 2.7; 95% confidence interval [CI]: 1.6-4.8) and disease recurrence after previous resection (76% vs 31% for de novo RPS, P<.001; HR: 4.4; 95% CI: 2.5-7.5). The 10-year complication rate was 5%, and RT-related complications were associated with postoperative RT (P<.001) and RT dose of 60 Gy (P<.001). Conclusions Intra-abdominal RPS recurrence continues to be a significant challenge despite the use of aggressive surgery and radiation therapy. Given the complications associated with postoperative radiation therapy, we recommend that preoperative radiation therapy is the preferred strategy when combined modality therapy is recommended.
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U2 - 10.1016/j.ijrobp.2015.04.047
DO - 10.1016/j.ijrobp.2015.04.047
M3 - Article
C2 - 26130233
AN - SCOPUS:84939468956
SN - 0360-3016
VL - 93
SP - 158
EP - 165
JO - International Journal of Radiation Oncology Biology Physics
JF - International Journal of Radiation Oncology Biology Physics
IS - 1
ER -