Localized pigmented villonodular synovitis of the knee with bone involvement mimicking a benign bone tumor: CT and MR findings.
The localized form of pigmented villonodular synovitis is characterized by a limited involvement of synovium. Although the knee is the joint that is commonly affected, bone changes in this location are not usual. We report the case of a histologically proven localized form of this entity in the knee, which mimicked a benign bone tumor on the basis of an MR pattern, CT findings, and scintigraphic results. Bone changes which may cause a pitfall in the diagnosis of the disorder are discussed.
Farrokh
D
D
Department of Radiology, University Hospital Saint-Pierre, Brussel, Belgium.
Annaert
J M
JM
Fabeck
L
L
Theunis
A
A
Delincé
P
P
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000473:pathology; D008279:Magnetic Resonance Imaging; D013583:Synovial Membrane / Q000473:pathology; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis* / Q000473:pathology; D014057:Tomography, X-Ray Computed