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Focal pigmented villo-nodular synovitis (PVNS)

Case contributed by Dr Mohammed ElBeialy

Presentation:

Knee pain.

Patient Data:

Age: 48 years
Gender: Female
Race: Middle eastern
Modality: MRI

· A small localized nodular synovial proliferation is seen indenting the superolateral aspect of the infra-patellar Hoffa's pad of fat, it is seen demonstrating hypointense T1 and hyperintense STIR / PD fat suppression signal. It measures 14 X 13 X 11 mm in its main diameters.

· Mild joint effusion.

· No meniscal tear. Intact cruciate and collateral ligaments. Intact articular cartilage. No marrow signal abnormality.

Case Discussion:

Focal Pigmented Villonodular Synovitis

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