Journal
DENTOMAXILLOFACIAL RADIOLOGY
Volume 36, Issue 1, Pages 55-58Publisher
BRITISH INST RADIOLOGY
DOI: 10.1259/dmfr/89319561
Keywords
temporomandibular joint; calcification; condyle; computed tomography (CT); magnetic resonance imaging (MRI)
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We report a rare case of synovial chondromatosis of the temporomandibular joint (TMJ) in a 31-year-old man. CT examination showed a mixed soft tissue mass with small calcifications near the right TMJ joint space. MR images revealed a heterogeneous mass on the different sequences and, after contrast administration, originating in the right TMJ. Cytology showed chondroid cellularity. The lesion was surgically removed and final histological study demonstrated the diagnosis of a synovial chondromatosis. We highlight the importance of the complementary findings from CT and MR, especially the important specific feature described for TMJ synovial chondromatosis related to the mixed density within the mass, in order to perform an accurate preoperative diagnosis whenever there is an absence of ossified loose bodies.
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