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Synovial osteochondromatosis of knee

Case contributed by: Dr Amit Tripathi

Presentation:

Clinical notes: Torn meniscus and locking

Patient Data:

Age: 18
Gender: Female
Race: Caucasian
Modality: MRI
Modality: MRI

Diffuse marked synovial proliferation with isointense to hypointense nodules in suprapatellar bursa, intercondylar notch and tibiofemoral joint space. (These were progressive compared with MRI two years ago).

Normal tendons, cartilage and ligaments. The collateral ligaments are displaced peripherally due to proliferating synovium extending between the ligaments and meniscocapsular attachment.

Following gadolinium, there is intense enhancement of the synovium and the nodules with focal well defined central areas of non-enhancement. Findings in keeping with synovial osteochondromatosis.

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