Preoperative IMRT for Soft Tissue Sarcoma of the Extremities and Trunk: Low Rate of Wound Complications

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

TERMINATED

Total Enrollment

67 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-01-31

Study Completion Date

2018-07-31

Brief Summary

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Postoperative wound healing complications following preoperative radiotherapy represent a severe problem in the treatment of malignant soft tissue tumors, and are reported to be 34% and more. The literature discusses intensely the advantages and disadvantages of this multimodal treatment concept and there are different opinions. The Canadian prospective randomized NCIC SR2 trial showed increased wound complication rates in the study arm receiving preoperative radiation. The Sarcoma Center Zurich pursues mainly this treatment concept and the results shall now be analysed and published. The approach is to show that not only the complication rates are comparable to international bench marks, but also the (still intermediate time) local control rates.

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Detailed Description

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Introduction: The Canadian prospective randomized NCIC SR2 trial tested the sequence of radiation and surgery for soft tissue sarcoma of the extremities. Similar disease control rates following pre- versus postoperative non-intensity modulated radiation therapy (non-IMRT) was found, with increased wound complications (17% vs 35%) in the preoperative radiation arm, \[95% CI 5-30\], p=0·01).

The investigators assessed a single center preoperative IMRT (or IMRT-equivalent highly conformal three dimensional conventional RT (3DcRT)) cohort with respect to the wound complication rate (WCR). The hypothesis was that a lower WCR rate was achieved in the era of IMRT as compared to the non-IMRT era when the Canadian Trial was conducted.

Methods: 67 consecutive patients irradiated with 50Gy in 25 fractions between 3/2008-3/2016 with preoperative IMRT (n=48, 72%) or highly conformal IMRT-equivalent 3DcRT dose distribution (n=19, 28%) were assessed. All patients were previously discussed at the weekly interdisciplinary sarcoma board of the Sarcoma Center Zurich.

Conditions

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Sarcoma

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Study Groups

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Combined Radiation/ Surgery

All patients treated with combined radiotherapy and surgery at Balgrist University Hospital and University Hospital Zurich

Radiation

Intervention Type RADIATION

preoperative Radiotherapy/ IMRT

Interventions

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Radiation

preoperative Radiotherapy/ IMRT

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

* Patients with a malignant soft tissue tumour
* Patients who underwent preoperative radiotherapy at the department of radiation oncology, University Hospital Zurich (USZ)
* Surgical treatment at Balgrist University Hospital between 2007 and 2016