title: Pigmented villonodular synovitis in the sacral joint with extensive bone destruction in a child.
abstract: We report a 12-year-old girl who had pigmented villonodular synovitis with extensive bony erosion around the left sacroiliac joint. The lesion mimicked a primary bone tumor clinically and radiologically, but was a typical pigmented villonodular synovitis (PVNS). The sacroiliac joint is an unusual site for PVNS, especially in the pediatric age group.
authors.affiliation: Department of Pathology, Seoul National University Children's Hospital, South Korea.
authors.forename: G H
authors.initials: GH
authors.lastname: Kang
authors.forename: J G
authors.initials: JG
authors.lastname: Chi
authors.forename: I H
authors.initials: IH
authors.lastname: Choi
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D012446:Sacroiliac Joint / Q000473:pathology*; D013586:Synovitis, Pigmented Villonodular / Q000175:diagnosis / Q000473:pathology* / Q000601:surgery