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Imaging Features of Pigmented Villonodular Synovitis with Emphasis on Sonographic Findings
J. Lin MD, W.J. Weadock, MD,
T.J. Quinn MD, J.A. Jacobson MD, D.A. Jamadar MBBS, J.H. Ellis
MD
University of Michigan, Ann
Arbor Michigan
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Introduction
Pigmented villonodular synovitis (PVNS) is
an uncommon, benign proliferative disorder of the synovium of
unknown etiology. PVNS is a monoarticular process and may
appear as either a localized or diffuse form with
the joint. Patients present with insidious onset of
progressive joint swelling and discomfort. Because clinical signs
and symptoms are typically non-specific, the radiologist plays a key
role in the diagnosis and management of patients with this
condition.
Purpose
We illustrate the spectrum of imaging findings of histopathologically
proven cases of PVNS involving various joints.
Characteristic findings of radiography, computed tomography, MR imaging, and sonography are
presented. Special features such as power Doppler imaging and CT-guided biopsy
technique are also discussed.
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