Features of Magnetic Resonance Diagnostics of Tenosynovial Giant Cell Tumor (Pigmented Villonodular Synovitis)

Aim. Demonstrate the features of magnetic resonance diagnostics of tenosynovial giant cell tumor. Materials and Methods . Using magnetic resonance imaging, we identified patients with tenosynovial giant cell tumor of the knee joint, describing the diagnostic features and clinical course of diffuse and local forms of the tumor. Results. Specific MRI patterns of tenosynovial giant cell tumor are hemosiderin deposits, villous and nodular growths of the synovium of the knee joint, joint effusion and bone erosion. Conclusion. Тenosynovial giant cell tumor is a rare mesenchymal neoplasm arising from the synovium of joints and tendon sheaths, disabling young able-bodied people. Magnetic resonance imaging, being the “gold” standard for radiological diagnostics, helps to identify specific patterns.