title: Sonography of pigmented villonodular synovitis in the ankle joint.
abstract: Pigmented villonodular synovitis is a benign proliferative disorder of the synovium that results in villous nodule formation in joints, tendon sheaths, and bursae. We present a case of pigmented villonodular synovitis of the ankle joint that was diagnosed by sonography with color Doppler imaging. The sonograms revealed hypoechoic synovial proliferation, and hypervascularity was visible on color Doppler images. The differential diagnosis of a synovial thickening or mass is also discussed.
authors.affiliation: Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei.
authors.forename: P Y
authors.initials: PY
authors.lastname: Yang
authors.forename: C L
authors.initials: CL
authors.lastname: Wang
authors.forename: C T
authors.initials: CT
authors.lastname: Wu
authors.forename: T G
authors.initials: TG
authors.lastname: Wang
authors.forename: F J
authors.initials: FJ
authors.lastname: Hsieh
mesh_terms: D000328:Adult; D000843:Ankle Joint / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D015726:Giant Cells / Q000473:pathology; D006485:Hemosiderin / Q000032:analysis; D006801:Humans; D008297:Male; D009389:Neovascularization, Pathologic / Q000000981:diagnostic imaging / Q000473:pathology; D013583:Synovial Membrane / Q000098:blood supply / Q000000981:diagnostic imaging / Q000473:pathology; D013586:Synovitis, Pigmented Villonodular / Q000000981:diagnostic imaging* / Q000473:pathology; D018615:Ultrasonography, Doppler, Color
chemical_list: D006485:Hemosiderin