Pleomorphic Liposarcoma of the Extremity and Trunk: Multimodality Therapy for Some but Not All?

Area of Science:

• Surgical Oncology
• Sarcoma Research
• Cancer Treatment Outcomes

Background:

• Pleomorphic liposarcoma (PLPS) is a rare soft tissue sarcoma.
• Distinguishing PLPS from other liposarcoma subtypes is crucial for treatment planning.

Purpose of the Study:

• To evaluate surgical outcomes for primary, non-metastatic pleomorphic liposarcoma.
• To identify potential indications for multimodality therapy in PLPS management.

Main Methods:

• Retrospective analysis of clinicopathologic data from 44 PLPS patients (2002-2019).
• Kaplan-Meier analysis for overall survival (OS), disease-specific death (DSD), local recurrence (LR), and distant metastasis (DM).
• Univariable models assessed associations between variables and outcomes.

Main Results:

• Median tumor size was 8.5 cm; 75% were high-grade (FNCLCC Grade 3).
• Five-year OS was 75.3%; DSD was 17.5%, LR was 2.3%, and DM was 32.5%.
• Larger tumor size correlated with worse OS and DSD. A subgroup with smaller, Grade 2 tumors achieved no recurrence after surgery alone.

Conclusions:

• Aggressive surgery and radiation therapy are effective for local control in PLPS.
• Chemotherapy may be beneficial for larger tumors.
• Surgery alone might be sufficient for smaller, Grade 2 PLPS, potentially leading to cure.