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[Imaging aspect of a case of fibrodysplasia ossificans progressiva]
Insights
Fibrodysplasia ossificans progressiva (FOP) is a rare congenital condition in young children. Early diagnosis via CT scans showing soft tissue edema and fascial calcification is crucial to avoid biopsies that can worsen this progressive disease.
Area of Science:
- Pediatric Rheumatology
- Medical Genetics
- Radiology
Background:
- Fibrodysplasia ossificans progressiva (FOP) is a rare genetic disorder characterized by progressive heterotopic ossification.
- It primarily affects children, manifesting before the age of five with characteristic physical deformities and inflammatory signs.
Observation:
- Early clinical signs include soft tissue swelling in the neck and back, pain, warmth, and low-grade fever.
- Associated features are hallux valgus and microdactyly of digits.
- Progressive calcification of fascias and muscles leads to contractures, disability, and restrictive lung disease.
Findings:
- Computed tomography (CT) in early stages reveals soft tissue edema.
- Later CT findings demonstrate calcification of muscular fascia.
- The combination of radiographic and CT findings is pathognomonic for FOP.
Implications:
- Accurate diagnosis based on clinical and imaging findings is essential.
- Avoidance of muscular biopsies is critical as they can exacerbate the condition.
- Early identification facilitates appropriate management and supportive care for affected children.
Abstract:
Fibrodysplasia ossificans progressiva is a rare congenital disease that affects children under the age of five years. Soft tissue swelling of the cervical and dorsal regions with local pain, warmth and low grade fever are the early clinical manifestations, usually associated with hallux valgus and microdactily of the fingers and toes. Calcifications of the fascias and muscles cause muscular contractures leading to progressive disability and restrictive lung disease. In the early stage, CT shows edema of the soft tissues and later on, calcifications of muscular fascia. The association of these radiographic and CT findings is specific and should avoid muscular biopsies which are known to be an aggravating factor in this disease.