title: Magnetic resonance imaging in the diagnosis of aggressive villonodular synovitis.
abstract: An aggressive and recurrent pigmented villonodular synovitis of the knee occurred in a 47-year-old man. Magnetic resonance imaging was an excellent noninvasive diagnostic aid that completely outlined the extent of the synovitis and correlated well with surgical findings.
mesh_terms: D000792:Angiography; D001158:Arteries; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013382:Subtraction Technique; D000074402:Synovectomy; D013583:Synovial Membrane / Q000098:blood supply; D013585:Synovitis / Q000175:diagnosis*; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery