title: The polka-dot sign.
authors.affiliation: Department of Radiology, Adelaide and Meath Hospital, Tallaght, Dublin 24, Ireland. tpersaud4@hotmail.com
authors.forename: Thara
authors.initials: T
authors.lastname: Persaud
mesh_terms: D003937:Diagnosis, Differential; D006391:Hemangioma / Q000000981:diagnostic imaging*; D006801:Humans; D008159:Lumbar Vertebrae; D013125:Spinal Neoplasms / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed