Bilateral pigmented villonodular synovitis of the knee

• Main Authors: Samir H. Shah, Jack A. Porrino, John R. Green III, Felix S. Chew
• Format: Article
• Language: English
• Published: Elsevier 2015-12-01
• Series: Radiology Case Reports
• Subjects: Pigmented villonodular synovitis; knee; bilateral
• Online Access: http://www.sciencedirect.com/science/article/pii/S1930043315300133

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.