Liposarcoma: Novel Approaches to Systemic Therapy and Multidisciplinary Care

Area of Science:

• Oncology
• Surgical Oncology
• Medical Oncology

Background:

• Retroperitoneal liposarcomas, encompassing well-differentiated liposarcoma (WDLPS) and dedifferentiated liposarcoma (DDLPS), are infrequent and present as large abdominal masses.
• Management necessitates a multidisciplinary approach, typically within high-volume specialized centers.

Purpose of the Study:

• To outline the current standard of care and treatment considerations for retroperitoneal WDLPS and DDLPS.
• To highlight the role of surgery and discuss the limited efficacy of neoadjuvant therapies.

Main Methods:

• Review of current treatment paradigms for retroperitoneal liposarcomas.
• Emphasis on surgical resection as the primary modality.
• Discussion of chemotherapy and radiation therapy roles.

Main Results:

• Complete en bloc resection is the cornerstone of surgical management for curative intent.
• Preoperative radiation therapy is not a standard approach.
• The utility of neoadjuvant chemotherapy is under investigation, with doxorubicin-based regimens preferred for unresectable or metastatic DDLPS.
• WDLPS are generally considered chemo-resistant.

Conclusions:

• Surgical resection remains the primary treatment for retroperitoneal liposarcomas.
• Systemic therapies have a limited role, particularly for WDLPS, and are mainly considered for unresectable or metastatic DDLPS.