Epithelioid sarcoma. Diagnosis, prognostic indicators, and treatment

Area of Science:

• Oncology
• Pathology
• Surgical Oncology

Background:

• Epithelioid sarcoma is a rare soft tissue sarcoma.
• It typically affects young adults and often occurs in the distal extremities.
• Understanding its behavior and treatment is crucial for patient outcomes.

Purpose of the Study:

• To review a large cohort of epithelioid sarcoma cases.
• To analyze tumor characteristics, behavior, and treatment outcomes.
• To identify prognostic factors influencing recurrence and metastasis.

Main Methods:

• Retrospective review of 241 epithelioid sarcoma cases.
• Analysis of clinical data, including tumor location, size, depth, and histological features.
• Evaluation of follow-up data for recurrence and metastatic rates.

Main Results:

• Epithelioid sarcoma predominantly affects young adults in distal extremities.
• High rates of recurrence (77%) and metastasis (45%) were observed.
• Aggressive features include proximal location, larger size, hemorrhage, necrosis, and vascular invasion.
• Favorable factors include younger age, distal location, and female sex.

Conclusions:

• Radical excision or amputation remains the primary treatment.
• High-dose radiotherapy may offer additional benefit.
• Further research into steroid receptors is warranted given observed sex-based differences.