What does fibrous dysplasia look like on xray?
Radiographic features of fibrous dysplasia are variable. Classically, radiographs depict a well-circumscribed lucent lesion in the metaphysis or diaphysis with a ground-glass appearance. The cortical bone may be thinned with diffuse endosteal scalloping.
What are the main features of fibrous dysplasia?
Bone pain, usually a mild to moderate dull ache. Swelling. Bone deformity. Bone fractures, particularly in the arms or legs.
Does fibrous dysplasia have ill defined radiographic margins?
Fibrous dysplasia was considered as radiological differential diagnosis, but the margin of the swelling was well-defined and well demarcated from the surrounding areas which was very much unlike FD whose margin is ill-defined and merges with the surrounding areas.
Is fibrous dysplasia radiolucent?
Among these imaging techniques, there are key features that are examined in order to more easily identify the presence of fibrous dysplasia. The abnormal growth of lesions can often be identified as either radiolucent or radiopaque or a mixture of both [2].
How is fibrous dysplasia detected?
The primary tool for diagnosis of fibrous dysplasia is an X-ray. While bone appears solid in an X-ray, a fibrous dysplasia lesion has a relative distinct appearance often described as “ground glass.” The condition may be diagnosed, therefore, even in a person with no symptoms who is getting an X-ray for other reasons.
What is ground glass appearance in fibrous dysplasia?
A typical FD lesion in the axial skeleton appear as an area of radiolucent ground glass matrix, which is usually smooth and homogeneous, not centrally located within medullary bone. Craniofacial FD typically demonstrates dense and sclerotic lesions (Fig. 4).
How do you diagnose fibrous dysplasia?
What are types of fibrous dysplasia?
The main types of fibrous dysplasia include:
- monostotic fibrous dysplasia – only one bone is affected.
- polyostotic fibrous dysplasia – two or more bones are affected.
- McCune-Albright syndrome – fibrous dysplasia can be associated with hormone disturbances and skin pigment changes.
What is a radiolucent lesion?
The radiolucent lesion has a broad border of transition and has destroyed the lateral cortex of the bone. There is minimal reaction of the bone to the lesion. Another possible diagnosis is metastatic carcinoma. B, Radiograph of a patient with an eosinophilic granuloma in his proximal humerus.
What is ground glass appearance in bone?
Ground glass opacification results from the superimposition of a myriad of poorly calcified bone trabeculae arranged in a disorganized pattern. Orange peel appearance with stippling is seen in some cases. Lamina dura of teeth in the affected area may be lost. This is quite common in the maxilla.
How is dysplasia diagnosed?
Cervical dysplasia is detected by a pap test (pap smear). It’s diagnosed with a biopsy. Abnormal changes in cells can be mild, moderate, or severe. The presence of cervical dysplasia doesn’t mean you have cervical cancer.
Which radiographic findings are characteristic of fibrous dysplasia (FD)?
The radiographic appearance of fibrous dysplasia (FD) and the rind sign. a–eFrontal radiographs demonstrate classic FD lesions in appendicular skeleton. A classic lucent lesion surrounded by a layer of sclerotic reactive bone (so-called the rind sign).
How useful is MRI in the workup of fibrous dysplasia?
MRI is not particularly useful in differentiating fibrous dysplasia from other entities as there is marked variability in the appearance of the bone lesions, and they can often resemble a tumor or more aggressive lesions. Demonstrates increased tracer uptake on Tc 99 bone scans (lesions remain metabolically active into adulthood).
What are the 4 types of fibrous dysplasia?
Fibrous dysplasia can affect any bone and can be divided into four subtypes 8 (although there is some overlap): monostotic: single bone. polyostotic: multiple bones. craniofacial fibrous dysplasia: skull and facial bones alone.
What is fibrous dysplasia of the ribcage?
Fibrous dysplasia is the most common cause of a benign expansile lesion of a rib (see rib lesions) MRI is not particularly useful in differentiating fibrous dysplasia from other entities as there is marked variability in the appearance of the bone lesions, and they can often resemble a tumor or more aggressive lesions.