title: The rusty knee--pigmented villonodular synovitis.
abstract: Pigmented villonodular synovitis (PVNS) is a distinct but rare clinical entity often presents late with a diagnostic difficulty. Its non-specific manifestations require exclusion of several chronic inflammatory disorders and other humorous lesions but all investigations including highly predictive magnetic resonance imaging (MRI) and arthroscopic examination are non-diagnostic demanding confirmatory tissue biopsy. A typical case of such lesion is presented to highlight some potential difficulties.
authors.affiliation: Department of Orthopaedics and Traumatology, Hospital Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
authors.forename: O
authors.initials: O
authors.lastname: Samsudin
authors.forename: K K
authors.initials: KK
authors.lastname: Leong
authors.forename: M H
authors.initials: MH
authors.lastname: Shukur
authors.forename: K K
authors.initials: KK
authors.lastname: Tan
authors.forename: S
authors.initials: S
authors.lastname: Ismail
mesh_terms: D000328:Adult; D001175:Arthrography; D001182:Arthroscopy / Q000379:methods; D001706:Biopsy; D003937:Diagnosis, Differential; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint; D008279:Magnetic Resonance Imaging; D000074402:Synovectomy; D013583:Synovial Membrane / Q000000981:diagnostic imaging / Q000473:pathology; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis / Q000601:surgery