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C-3101 - Myositis ossificans: tips and tricks to recognize it and differential diagnosis.
F. Petta1, M. Cortese1, N. Magarelli2, A. Leone2, C. Colosimo2; 1Roma/IT 2Rome/IT
Type: Educational Exhibit
Area of Interests: Musculoskeletal soft tissue, Musculoskeletal bone
Imaging Techniques: MR, CT, Conventional radiography
Procedure: Diagnostic procedure
Special Focuses: Trauma, Demineralisation-Bone, Calcifications / Calculi

Learning objectives:
To illustrate the radiological appearance of myositis ossificans. To highlight the suggestive features helping distinguish it from more aggressive pathological processes.
Background:
MYOSITIS OSSIFICANS Myositis ossificans is a pseudo-inflammatory tumor that originates from skeletal muscle and corresponds to a heterotopic, metaplastic, nonmalignant bone tumor with an unknownpathogenesis. Myositis ossificans might develop secondary to a muscular trauma but often there is not a [...]
Findings and procedure details:
We retrospectively reviewed our radiologic archives and literature to illustrate the radiological features of myositis ossificans, helping distinguish it from more aggressive pathological processes, such as parosteal osteosarcoma and synovial sarcoma according to different imaging techniques. CT/P[...]
Conclusion:
Early and correct diagnosis of soft-tissue calcified masses is fundamental for indication of proper management of the disease.
Personal information:
References:
Jong Hoon Park et al. (2010) Highly malignant soft tissue sarcoma of the extremity with a delayed diagnosis. World Journal of Surgical Oncology 8:84 Zafiria G Papathanassiou et al. (2011) Parosteal osteosarcoma mimicking osteochondroma: A radio-histologic approach on two cases. Clinical Sarcoma Rese[...]

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