Magnetic resonance imaging of pigmented villonodular synovitis: a report of two cases
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- Spritzer, C.E., Dalinka, M.K. & Kressel, H.Y. Skeletal Radiol (1987) 16: 316. doi:10.1007/BF00361475
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The magnetic resonance imaging characteristics of two surgically proven cases of pigmented villonodular synovitis are reported. On the short TR/TE pulse sequences, the synovium has an intermediate signal intensity. Long TR/TE pulse sequences show the synovium containing areas of increased signal interspersed with decreased signal. Hemosiderin deposition is believed to account for the areas of decreased signal; the increased signal results from fluid and inflamed synovium.