MRI in Diagnosis of Pigmented Villonodular Synovitis

Objective:To investigate MRI features of pigmented villonodular synovitis.Methods:MRI findings of 17 patients with pathologically-proved pigmented villonodular synovitis were retrospectively analyzed.Results:Typical feature can be seen on every alignment of MRI scan in the 17 patients including nodular synovitis prolifetation,typical for hemosiderin deposition,iso-low signal on T1WI and T2WI.Conclusion:PVNS has typical feature in MRI scan.Contrasting the other diagonosis of image,MRI is of great value in diagnosing PVNS.