Pigmented Villonodular Synovitis of the Thoracic Vertebra Presenting with Progressive Spastic Paraparesis

<table>HE ×20 histiocytic and mononuclear cells, multinuclear giant cells.</table>

Case Reports in Orthopedics

Figure 4: Pigmented Villonodular Synovitis of the Thoracic Vertebra Presenting with Progressive Spastic Paraparesis 