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Bilateral pigmented villonodular synovitis of the knee.

Abstract
Pigmented villonodular synovitis is a disorder resulting in a villous, nodular, or villonodular proliferation of the synovium, with pigmentation related to the presence of hemosiderin. These lesions are almost exclusively benign with rare reports of malignancy. Pigmented villonodular synovitis can occur in a variety of joints and at any age but most often occurs within the knee in the young adult. Pigmented villonodular synovitis is a rare disease entity, and bilateral synchronous or metachronous involvement of a joint is even more uncommon, with few reports previously described in the literature. We present a case of pigmented villonodular synovitis involving both the right and left knee in the same patient, with radiographic imaging, magnetic resonance imaging, photograph and video intraoperative imaging, and pathologic correlation.
AuthorsSamir H Shah, Jack A Porrino, John R Green 3rd, Felix S Chew
JournalRadiology case reports (Radiol Case Rep) Vol. 10 Issue 4 Pg. 56-60 (Dec 2015) ISSN: 1930-0433 [Print] Netherlands
PMID26649121 (Publication Type: Case Reports)

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