Outcome of 1773 superficial non-dermatofibrosarcoma sarcomas A French Sarcoma Group study (FSG) from the NETSARC...

Area of Science:

• Oncology
• Surgical Oncology
• Cancer Research

Background:

• Management of superficial non-dermatofibrosarcoma soft tissue sarcomas (NDSTS) varies based on surgical margin status.
• Assessing outcomes related to margin status and re-excision is crucial for optimizing treatment strategies.

Purpose of the Study:

• To evaluate the impact of surgical margin status and re-excision on local relapse-free survival (LRFS) and overall survival (OS) in NDSTS patients.
• To identify factors influencing surgical quality and patient outcomes within a nationwide database.

Main Methods:

• Retrospective analysis of 1773 NDSTS patients from the NETSARC+ database (2010-2017).
• Focus on local relapse-free survival (LRFS) and overall survival (OS) in relation to margin status (R0, R1, R2) and re-excision.
• Multivariate analyses to identify prognostic factors for LRFS and OS.

Main Results:

• R0 margins were associated with preoperative biopsy, adequate imaging, multidisciplinary tumor board (MDTB) discussion, and smaller tumor size.
• Reference network surgery demonstrated higher rates of R0 margins.
• Poor LRFS was linked to larger tumor size, angiosarcoma, surgery outside a network, older age, and non-R0 margins.
• Poor OS was associated with angiosarcoma, specific tumor sites, higher tumor grades, older age, and non-R0 margins.

Conclusions:

• Compliance with sarcoma clinical practice guidelines correlates with improved surgical quality.
• Adherence to guidelines is associated with reduced local relapse rates.
• Guideline compliance positively impacts patient survival outcomes for NDSTS.