title: Bilateral lipoma arborescens of the knee in a child: a case report.
abstract: We report a case of childhood lipoma arborescens of both knee joints who had been erroneously diagnosed to have initially acute rheumatic fever and subsequently oligoarticular juvenile rheumatoid arthritis. She had taken anti-inflammatory medication for 8 years without remission of the effusion. Magnetic resonance imaging (MRI) and synovectomy revealed the diagnosis of lipoma arborescens. Lipoma arborescens should be kept in mind in the differential diagnosis of refractory chronic joint effusion and synovial hypertrophy in the childhood period, and MRI yields the correct diagnosis in this setting.
authors.affiliation: Department of Orthopaedics and Traumatology, Hacettepe University Medical Center, 06100 Sihhiye-Ankara, Turkey. oaatay@hacettepe.edu.tr
authors.forename: Akin
authors.initials: A
authors.lastname: Cil
authors.forename: O Ahmet
authors.initials: OA
authors.lastname: Atay
authors.forename: Ustün
authors.initials: U
authors.lastname: Aydingöz
authors.forename: Onur
authors.initials: O
authors.lastname: Tetik
authors.forename: Gökhan
authors.initials: G
authors.lastname: Gedikoğlu
authors.forename: M Nedim
authors.initials: MN
authors.lastname: Doral
mesh_terms: D000293:Adolescent; D001171:Arthritis, Juvenile / Q000175:diagnosis; D001182:Arthroscopy; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D008067:Lipoma / Q000175:diagnosis* / Q000601:surgery; D012213:Rheumatic Fever / Q000175:diagnosis; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000601:surgery