“ Painless, benign extra-articular proliferation of synovial tissue, considered to be an extra-articular PVNS . More common in females aged...
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Painless, benign extra-articular proliferation of synovial tissue, considered to be an extra-articular PVNS. More common in females aged 40-50 years and commonly affects the hands and feet (most commonly a soft tissue mass here after a ganglion).
US
• Solid hypoechoic mass with vascularity typically adjacent to the flexor tendons of the hands.
MRI
• Mass is low signal on T1 and T2 due to haemosiderin (relatively specific).
• Homogeneous enhancement of the mass.
PLAIN FILM
• Bone erosion is associated with the mass in up to 15%.
• Mass is usually not calcified.
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