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MR characteristics of epithelioid sarcoma
J A Romero1, E E Kim, I S Moral
1Department of Diagnostic Radiology, University of Texas M.D. Anderson Cancer Center, Houston 77030.
Journal of Computer Assisted Tomography
|November 1, 1994
Summary
Magnetic resonance imaging (MRI) helps identify intratumoral hemorrhage in epithelioid sarcomas. Hemorrhagic tumors indicate a higher risk of early metastasis, necessitating aggressive treatment and follow-up.
Area of Science:
- Oncology
- Radiology
- Pathology
Background:
- Epithelioid sarcoma is a rare soft tissue sarcoma.
- Accurate diagnosis and staging are crucial for effective treatment.
Purpose of the Study:
- To characterize magnetic resonance imaging (MRI) findings in epithelioid sarcomas.
- To correlate MRI findings with metastasis and recurrence rates.
Main Methods:
- Retrospective analysis of 36 MRI studies from 12 patients with epithelioid sarcoma.
- Evaluation of lesion location, signal characteristics, bone/vascular involvement, recurrence, and metastasis patterns.
Main Results:
- Epithelioid sarcomas predominantly occurred in upper extremities (58%).
- MRI identified two tumor categories: hemorrhagic (2 patients) and nonhemorrhagic (10 patients).
- Recurrence was observed in 33% and metastasis in 50% of cases; hemorrhagic tumors showed earlier metastasis.
Conclusions:
- MRI is valuable for detecting intratumoral hemorrhage in epithelioid sarcoma.
- Hemorrhagic epithelioid sarcomas require more aggressive treatment and closer follow-up due to higher metastasis risk.