Imaging features of synovial chondromatosis of the temporomandibular joint: a report of 34 cases.
Clin Radiol
; 76(8): 627.e1-627.e11, 2021 08.
Article
in En
| MEDLINE
| ID: mdl-33762137
ABSTRACT
AIM:
To investigate the imaging features of synovial chondromatosis of the temporomandibular joint (TMJ), which is a rare benign arthropathy with cartilaginous proliferation. MATERIALS ANDMETHODS:
Computed tomography and magnetic resonance imaging examinations of 34 patients with histopathologically confirmed primary synovial chondromatosis of the TMJ were reviewed retrospectively. Imaging features including the lesion epicentre, destruction/sclerosis of surrounding bone, calcification, periosteal reaction, osteophyte, lesion size, and joint space dimensions were assessed.RESULTS:
Thirty-one of thirty-four patients (91.2%) showed the superior joint space as the lesion epicentre. For the mandibular condyle, more than one-third of patients (14/34; 41.2%) showed no destruction, and more than half of patients (19/34; 55.9%) showed no sclerosis. Conversely, >70% of patients showed destruction and sclerosis of the articular eminence/glenoid fossa, while >80% of patients (28/34; 82.4%) presented with various calcifications, including the ring-and-arc (9/34; 26.5%) and popcorn (13/34; 38.2%) types. The mean joint space on the affected side was significantly larger than that of the unaffected side (p<0.001). More than three-fourths of patients (76.9%) experienced no interval increase in lesion size during an average of 1.6 years of follow-up.CONCLUSION:
Synovial chondromatosis of the TMJ demonstrated several imaging features, including the lesion centre being located in the superior joint space, resultant articular eminence/glenoid fossa-oriented bone changes, ring-and-arc and popcorn calcification, joint space widening, and self-limiting growth. These imaging features may be helpful in differentiating synovial chondromatosis from other lesions of the TMJ.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Magnetic Resonance Imaging
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Temporomandibular Joint Disorders
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Tomography, X-Ray Computed
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Chondromatosis, Synovial
Type of study:
Observational_studies
Limits:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Language:
En
Journal:
Clin Radiol
Year:
2021
Document type:
Article
Affiliation country: