Pigmented villonodular synovitis - ankle

Case contributed by Dr Domenico Nicoletti

Presentation

Right ankle pain without trauma.

Patient Data

Age: 6 years
Gender: Female

Right ankle

X-ray

In the anterior tibial joint, there is slight nodular opacity with regular margins. Also posteriorly there is a recognizable increase in opacity with a compressive effect on the adipose triangle of the Kager.

Right ankle

MRI

In the anterior tibial joint, there is a nodule of synovial hypertrophy with blooming artifacts. Smaller nodule with blooming artifact is also noted posteriorly. Bone erosions and joint effusion are not recognizable.

Case Discussion

Pigmented villonodular synovitis is a benign proliferative disorder of the synovial membrane characterized by proliferative, locally invasive tumor-like lesions, usually involving a single joint, tendon sheath or bursa.

Case courtesy: Dr.ssa Laura Braccaioli

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