Prognostic index for extremity soft tissue sarcomas with isolated local recurrence

Area of Science:

• Orthopedic Oncology
• Surgical Oncology
• Sarcoma Research

Background:

• Local recurrence rates for extremity soft tissue sarcomas range from 10% to 20% despite optimal treatment.
• The prognostic significance of local recurrence on patient survival remains debated.
• A validated staging system is needed to guide treatment and predict outcomes for recurrent cases.

Purpose of the Study:

• To identify independent prognostic factors for survival in patients with locally recurrent extremity soft tissue sarcomas.
• To develop a staging system to predict outcomes and inform therapeutic decisions.

Main Methods:

• A retrospective analysis of clinical and pathological data from 110 patients with locally recurrent extremity soft tissue sarcomas.
• Univariate and multivariate analyses were used to assess factors influencing local recurrence, distant metastasis, and disease-specific survival.

Main Results:

• Tumor size, histologic grade, and time to local recurrence were identified as independent prognostic factors for distant metastasis and survival.
• A prognostic index derived from these factors effectively stratified patients into distinct survival groups (P < .0001).
• Disease-specific survival at 5 years was 63% overall and 69% for patients with isolated local recurrence.

Conclusions:

• Tumor size, histologic grade, and time to recurrence are key determinants of survival in locally recurrent extremity soft tissue sarcomas.
• The proposed staging system, based on these factors, accurately predicts prognosis.
• This staging system can guide therapeutic decisions, including the consideration of adjuvant systemic therapy.