title: [Arthritis revealing an osteoid osteoma in a patient with spondylarthropathy].
abstract: Intra-articular osteoid osteoma is rare and difficult to diagnose. We report a 38-year-old woman who presented with an inflammatory monoarticular arthritis in the right ankle in the context of a spondylarthropathy, otherwise well-controlled by leflunomide. This monoarthritis was resistant to all types of treatment. Investigations led to the diagnosis of an intra-articular osteoid osteoma. This original observation is the first description of an osteoid osteoma developing in a patient already known to have inflammatory rheumatism. All previous reported cases were monoarthritis consecutive to the osteoid osteoma itself and interpreted as incipient inflammatory rheumatism.
authors.affiliation: Service de rhumatologie, hôpital de Hautepierre, avenue Molière, 67000 Strasbourg cedex, France. lsparsa@hotmail.fr
authors.forename: L
authors.initials: L
authors.lastname: Sparsa
authors.forename: C
authors.initials: C
authors.lastname: Sordet
authors.forename: T
authors.initials: T
authors.lastname: Moser
authors.forename: J-L
authors.initials: JL
authors.lastname: Kuntz
authors.forename: J
authors.initials: J
authors.lastname: Sibilia
mesh_terms: D000328:Adult; D000843:Ankle Joint; D001168:Arthritis / Q000175:diagnosis / Q000209:etiology*; D001859:Bone Neoplasms / Q000150:complications* / Q000175:diagnosis; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010017:Osteoma, Osteoid / Q000150:complications* / Q000175:diagnosis; D025242:Spondylarthropathies / Q000175:diagnosis / Q000188:drug therapy / Q000209:etiology*