CHORUS
Collaborative Hypertext of Radiology
Musculoskeletal system
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pigmented villonodular synovitis (PVS)
- monoarthritis
- young adults
- benign neoplasm affecting extremity joints
- subchondral erosions on BOTH sides of joint (!)
- hemosiderin deposited in synovium (with characteristic low signal on MR)
- articular cartilage preserved
(despite extensive marginal erosions; similar to gout)
- NO calcification, but soft tissue may appear dense on X-ray/CT
DDx:
Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 October 2013
Copyright © 2013, Charles E. Kahn, Jr.
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