title: Isolated periostitis as a manifestation of systemic vasculitis in a child: imaging features.
abstract: We report a case of isolated periostitis associated with Takayasu arteritis in a 10-year-old boy presenting with calf pain. Radiographs revealed a localized, thick periosteal reaction with irregular margin in the proximal left fibula. MRI revealed irregular thickening with enhancement of the periosteum in the proximal fibula and heterogeneous enhancement along vascular bundles in the calf. Isolated periostitis is a rare skeletal manifestation of systemic vasculitis that could be misdiagnosed as neoplastic or traumatic periosteal reaction.
authors.affiliation: Department of Radiology, Seoul National University College of Medicine and the Institute of Radiation Medicine, 101 Daehang-ro Jongro-gu, Seoul, 110-744, Republic of Korea. cheonje@snu.ac.kr
authors.forename: Jung-Eun
authors.initials: JE
authors.lastname: Cheon
authors.forename: In-One
authors.initials: IO
authors.lastname: Kim
authors.forename: Woo Sun
authors.initials: WS
authors.lastname: Kim
authors.forename: Kyung Mo
authors.initials: KM
authors.lastname: Yeon
mesh_terms: D002648:Child; D006801:Humans; D007866:Leg / Q000098:blood supply / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D010522:Periostitis / Q000175:diagnosis* / Q000209:etiology*; D014057:Tomography, X-Ray Computed; D014657:Vasculitis / Q000150:complications* / Q000175:diagnosis*