title: Localized pigmented villonodular synovitis of the knee mimicking meniscal injury.
mesh_terms: D000328:Adult; D001182:Arthroscopy; D003937:Diagnosis, Differential; D006801:Humans; D007719:Knee Joint; D008297:Male; D013585:Synovitis / Q000175:diagnosis*; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D000070600:Tibial Meniscus Injuries