Imaging Science in Dentistry

Korean Academy of Oral and Maxillofacial Radiology (대한영상치의학회)
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Head and neck manifestations of fibrodysplasia ossificans progressiva: Clinical and imaging findings in 2 cases

  • Gyu-Dong Jo (Department of Oral and Maxillofacial Radiology, Seoul National University Dental Hospital) ;
  • Ju-Hee Kang (Department of Oral and Maxillofacial Radiology, Seoul National University Dental Hospital) ;
  • Jo-Eun Kim (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University) ;
  • Won-Jin Yi (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University) ;
  • Min-Suk Heo (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University) ;
  • Sam-Sun Lee (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University) ;
  • Kyung-Hoe Huh (Department of Oral and Maxillofacial Radiology, School of Dentistry, Seoul National University)
  • Received : 2023.03.23
  • Accepted : 2023.05.12
  • Published : 2023.09.30
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Abstract

Fibrodysplasia ossificans progressiva is a rare hereditary disorder characterized by progressive heterotopic ossification in muscle and connective tissue, with few reported cases affecting the head and neck region. Although plain radiographic findings and computed tomography features have been well documented, limited reports exist on magnetic resonance findings. This report presents 2 cases of fibrodysplasia ossificans progressiva, one with limited mouth opening due to heterotopic ossification of the lateral pterygoid muscle and the other with restricted neck movement due to heterotopic ossification of the platysma muscle. Clinical findings of restricted mouth opening or limited neck movement, along with radiological findings of associated heterotopic ossification, should prompt consideration of fibrodysplasia ossificans progressiva in the differential diagnosis. Dentists should be particularly vigilant with patients diagnosed with fibrodysplasia ossificans progressiva to avoid exposure to diagnostic biopsy and invasive dental procedures.

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References

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