Localized pigmented villonodular synovitis

Case contributed by Dr Bahman Rasuli

Presentation

Knee pain.

Patient Data

Age: 40 years
Gender: Female

Marked joint effusion.

There is a 9 x16 mm localized nodular synovial proliferation involving the infra-patellar Hoffa's pad of fat, demonstrating hypointense T1 and hyperintense T2/ PD fat suppression signal with some foci of low signal in the sequences.

Meniscal, cruciate and collateral ligaments are intact.

 Intact articular cartilage.

 No marrow signal abnormality.

Case Discussion

Localized pigmented villonodular synovitis is a focal nodular hypertrophic process originating from a small area of the synovium with pigmentation from hemosiderin.

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Case information

rID: 71077
Published: 25th Sep 2019
Last edited: 27th Sep 2019
Inclusion in quiz mode: Included
Institution: Jame Jam Imaging Center

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