The rusty knee--pigmented villonodular synovitis.
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.
Samsudin
O
O
Department of Orthopaedics and Traumatology, Hospital Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.
Leong
K K
KK
Shukur
M H
MH
Tan
K K
KK
Ismail
S
S
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