Related Experiment Videos
MRI of myositis ossificans circumscripta
S Ehara1, T Nakasato, Y Tamakawa
1Center for Radiological Science, Iwate Medical University School of Medicine, Morioka, Japan.
Clinical Imaging
|April 1, 1991
Summary
Myositis ossificans circumscripta can mimic cancer without a trauma history. Magnetic resonance imaging (MRI) shows extensive abnormal signals in muscle fibers, improving diagnostic confidence for this condition.
Area of Science:
- Orthopedic Surgery
- Radiology
- Pathology
Background:
- Myositis ossificans circumscripta, also known as pseudomalignant osseous tumor of soft tissue, presents a diagnostic challenge.
- It can be misdiagnosed as a malignant neoplasm, particularly when a clear history of trauma is absent.
Observation:
- This study presents two cases of myositis ossificans circumscripta.
- Magnetic resonance imaging (MRI) revealed disproportionally extensive abnormal signal intensity within muscle fibers in both cases.
Findings:
- The observed MRI findings, while not definitively specific, provide significant visual evidence.
- The abnormal signal intensity pattern is strongly associated with the course of muscle fibers.
Implications:
- MRI can enhance diagnostic confidence in cases of suspected myositis ossificans.
- Distinguishing myositis ossificans from malignant tumors is crucial for appropriate patient management and treatment.