title: A bone cyst treated with corticosteroid installation in an osteopetrotic child.
abstract: Bone cysts in patients suffering from osteopetrosis are uncommon. A pathologic fracture might cause therapeutic difficulties because of the osteosclerotic bone. We describe a patient with an autosomal dominant osteopetrosis suffering from a large bone cyst in the proximal femur. The cyst was treated with local injections of corticosteroid and healed completely after 2 injections. To our knowledge, this is the first time that the occurrence of bone cysts has been reported in osteopetrotic patients, which responds effectively and lastingly to steroid injection.
authors.affiliation: Department of Orthopaedics, Odense University Hospital, Odense, Denmark. zaubaidi@hotmail.com
authors.forename: Zaid
authors.initials: Z
authors.lastname: Al-Aubaidi
authors.forename: Niels Wisbech
authors.initials: NW
authors.lastname: Pedersen
mesh_terms: D000893:Anti-Inflammatory Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D001845:Bone Cysts / Q000188:drug therapy* / Q000209:etiology; D002648:Child; D005269:Femur / Q000473:pathology; D005500:Follow-Up Studies; D005938:Glucocorticoids / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D007267:Injections; D008297:Male; D008775:Methylprednisolone / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use; D000077555:Methylprednisolone Acetate; D010022:Osteopetrosis / Q000150:complications; D016896:Treatment Outcome
chemical_list: D000893:Anti-Inflammatory Agents; D005938:Glucocorticoids; D000077555:Methylprednisolone Acetate; D008775:Methylprednisolone