[Fibrodysplasia (myositis) ossificans progressiva]

Area of Science:

• Genetics
• Orthopedics
• Rare Diseases

Background:

• Fibrodysplasia ossificans progressiva (FOP) is a rare autosomal dominant genetic disorder.
• It is characterized by congenital malformations of the great toes and thumbs.
• Progressive heterotopic ossification can lead to severe physical disability.

Observation:

• A seven-year-old boy with intellectual disability and congenital toe/thumb malformations presented with recurrent shoulder lumps.
• Initial biopsies showed edema, inflammation, and fibromyxoid proliferation.
• Subsequent biopsies revealed progressive ossification of muscle and fascia.

Findings:

• The patient's presentation and biopsy results are typical of fibrodysplasia ossificans progressiva.
• FOP can be associated with alopecia, deafness, and intellectual disability.
• The condition leads to significant physical impairment, respiratory issues, and nutritional challenges.

Implications:

• Early identification of FOP is critical for patient management.
• Avoiding exacerbating factors like biopsies, surgeries, and intramuscular injections is essential.
• There is currently no effective treatment for FOP, highlighting the need for further research and supportive care strategies.