Primary synovial chondromatosis of the temporomandibular joint

Case contributed by Anna Salwa Kaminska
Diagnosis certain

Presentation

The patient presents with pain and limitation of motion in the left temporomandibular joint.

Patient Data

Age: 55 years
Gender: Male

MRI shows a fluid-filled mass expanding the joint space and multiple loose bodies. Post-contrast T1W sequence demonstrates peripheral enhancement representing thickened synovium.

Case Discussion

Synovial chondromatosis is an uncommon, benign monoarticular disorder characterized by synovial metaplasia with the intra-articular proliferation of cartilaginous nodules originating from the synovial membrane. The condition affecting most often the knee joint.

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