Myositis ossificans: the mimicker

Area of Science:

• Radiology
• Orthopedic Surgery
• Pediatric Case Study

Background:

• Myositis ossificans is a benign condition involving heterotopic bone formation in muscle.
• Early diagnosis is crucial for appropriate management and to differentiate from malignant tumors.

Observation:

• A 14-year-old male presented with acute onset upper backache and a painful paraspinal swelling.
• Initial MRI revealed a non-specific lesion with intense enhancement.
• Ultrasound and CT demonstrated peripheral calcification evolving over time.

Findings:

• The imaging findings, particularly the progressive rim calcification on CT, were diagnostic of myositis ossificans.
• The case underscores the importance of serial imaging in diagnosing evolving musculoskeletal lesions.
• Differential diagnoses included soft tissue tumors and infections.

Implications:

• This case emphasizes the utility of advanced imaging techniques in diagnosing myositis ossificans.
• Understanding the imaging spectrum of myositis ossificans aids in accurate diagnosis and avoids unnecessary interventions.
• Further research into the pathogenesis and optimal treatment strategies for myositis ossificans is warranted.