This multicenter RCT randomized 190 adults with extremity soft-tissue sarcoma to preoperative (50 Gy/25 fractions) versus postoperative radiotherapy (66 Gy/33 fractions). The primary question: does radiation timing affect major wound complication rates within 120 days of surgery? Stratification was by tumor size (≤10 cm vs >10 cm).
Radiation timing in extremity sarcoma is a genuine trade-off, not a clear winner. Before this trial, the wound complication excess with preoperative radiation was documented only in retrospective series prone to selection bias — surgeons tended to choose preoperative radiation for more advanced lesions, inflating apparent complication rates.
This RCT quantified the trade-off with level I evidence: preoperative radiation increases wound complication risk by 18% in absolute terms, but spares patients from larger fields, higher doses, and nearly double the rate of severe acute skin toxicity.
When counseling a patient on radiation timing, location matters as much as anything else. Lower leg tumors carry a 38% wound complication rate with preoperative radiation vs 5% postoperative. That gap should drive decision-making. Upper extremity tumors show minimal difference and may actually favor preoperative radiation to protect adjacent structures like the brachial plexus.
The practical framework this paper established: individualize based on grade, size, and anatomical site. For a large, high-grade thigh or lower leg sarcoma in a patient with healing risk factors (diabetes, smoking), postoperative radiation avoids a wound disaster. For an upper arm lesion where field size and dose to adjacent neurovascular structures are the concern, preoperative radiation is the better trade.
This multicenter RCT randomized 190 adults with extremity soft-tissue sarcoma to preoperative (50 Gy/25 fractions) versus postoperative radiotherapy (66 Gy/33 fractions). The primary question: does radiation timing affect major wound complication rates within 120 days of surgery? Stratification was by tumor size (≤10 cm vs >10 cm).
Radiation timing in extremity sarcoma is a genuine trade-off, not a clear winner. Before this trial, the wound complication excess with preoperative radiation was documented only in retrospective series prone to selection bias — surgeons tended to choose preoperative radiation for more advanced lesions, inflating apparent complication rates.
This RCT quantified the trade-off with level I evidence: preoperative radiation increases wound complication risk by 18% in absolute terms, but spares patients from larger fields, higher doses, and nearly double the rate of severe acute skin toxicity.
When counseling a patient on radiation timing, location matters as much as anything else. Lower leg tumors carry a 38% wound complication rate with preoperative radiation vs 5% postoperative. That gap should drive decision-making. Upper extremity tumors show minimal difference and may actually favor preoperative radiation to protect adjacent structures like the brachial plexus.
The practical framework this paper established: individualize based on grade, size, and anatomical site. For a large, high-grade thigh or lower leg sarcoma in a patient with healing risk factors (diabetes, smoking), postoperative radiation avoids a wound disaster. For an upper arm lesion where field size and dose to adjacent neurovascular structures are the concern, preoperative radiation is the better trade.