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MR imaging of synovial sarcoma
M J Morton1, T H Berquist, R A McLeod
1Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.
AJR. American Journal of Roentgenology
|February 1, 1991
Summary
Magnetic resonance (MR) imaging can help diagnose synovial sarcoma. Key indicators include inhomogeneous, septated masses near joints, tendons, or bursae, often with calcifications visible on other imaging.
Area of Science:
- Radiology and Medical Imaging
- Oncology
- Orthopedic Surgery
Background:
- Synovial sarcoma is a rare soft-tissue malignancy.
- Accurate and early diagnosis is crucial for effective treatment.
- Magnetic resonance (MR) imaging is a key modality for soft-tissue tumor evaluation.
Purpose of the Study:
- To illustrate the characteristic MR imaging findings of synovial sarcoma.
- To identify MR features most indicative of synovial sarcoma.
- To correlate MR findings with other imaging modalities.
Main Methods:
- Retrospective review of 12 histopathologically confirmed synovial sarcoma cases.
- Analysis of MR imaging features including signal intensity, enhancement patterns, septations, and margins.
- Correlation of MR findings with computed tomography (CT) and plain radiography findings, particularly for calcifications.
Main Results:
- Synovial sarcoma typically presents as an inhomogeneous mass on MR imaging.
- Key features include internal septations and infiltrative margins.
- Optimal tumor location is adjacent to joints, tendons, or bursae.
- The presence of soft-tissue calcification, visible on CT or radiographs, enhances diagnostic confidence.
Conclusions:
- MR imaging is valuable for diagnosing synovial sarcoma.
- Specific MR characteristics, such as inhomogeneous appearance, septations, and infiltrative margins, are highly suggestive.
- Integration of MR findings with CT or plain radiography, especially for calcifications, improves diagnostic accuracy for synovial sarcoma.