PT  - JOURNAL ARTICLE
AU  - Henda Bouali
AU  - Eric J Deppert
AU  - Lawrence J Leventhal
AU  - Brian Reeves
AU  - Thomas Pope
TI  - Pigmented villonodular synovitis: a disease in evolution.
DP  - 2004 Aug 01
TA  - The Journal of Rheumatology
PG  - 1659--1662
VI  - 31
IP  - 8
4099  - http://www.jrheum.org/content/31/8/1659.short
4100  - http://www.jrheum.org/content/31/8/1659.full
SO  - J Rheumatol2004 Aug 01; 31
AB  - Pigmented villonodular synovitis (PVNS) is a rare, benign, proliferative disease of the synovial membrane of joints, tendon sheaths, and bursas. Joint aspiration typically yields hemorrhagic or xanthochromic/serosanguinous (brown, murky) fluid. We describe a case of PVNS that presented as an acute, painless, nontraumatic right knee effusion with clear synovial fluid on arthrocentesis. Initial magnetic resonance imaging of the knee revealed no evidence for hemosiderin. A diagnostic arthroscopy and surgical arthrotomy revealed a unique case of PVNS evolving from local to diffuse involvement of the synovium.