Local recurrence rates of superficial versus deep soft tissue sarcoma

Area of Science:

• Oncology
• Surgical Pathology

Background:

• Soft tissue sarcomas are malignancies often found in extremities.
• Deep lesions within muscular fascia may have higher recurrence rates than superficial ones.

Purpose of the Study:

• To investigate the relationship between tumor depth and local recurrence rates in extremity soft tissue sarcomas.
• To identify factors associated with local recurrence after surgical resection.

Main Methods:

• Retrospective review of 90 patients with extremity soft tissue sarcomas undergoing surgical resection (2007-2015).
• Inclusion criteria: minimum 2-year follow-up and adequate outcome data.
• Analysis of tumor depth (superficial vs. deep to fascia) and surgical margin status.

Main Results:

• Superficial lesions (22.2%) had significantly higher 5-year recurrence-free survival (58.2%) compared to deep lesions (91.1%, p=0.006).
• Deeper tumors were associated with lower odds of local recurrence (HR 0.26).
• Positive surgical margins occurred in 36.7% of cases and were linked to increased local recurrence (33.3% vs. 12.3%, p=0.027).

Conclusions:

• Superficial tumor depth is a significant risk factor for local recurrence of extremity soft tissue sarcomas post-surgery.
• Positive surgical margins are also associated with a higher likelihood of local recurrence.