title: Extraosseous aneurysmal bone cyst in a 12-year-old girl.
abstract: A soft-tissue aneurysmal bone cyst located on the lateral aspect of the left thigh of a 12-year-old girl is described. Conventional radiography of the thigh was normal. Sonography showed a hypoechoic mass with a feeding vessel and intralesional vascularity. On MRI, it was of predominantly soft-tissue signal intensity with intense enhancement following administration of i.v. contrast medium. Histopathological examination diagnosed the lesion as a soft-tissue aneurysmal bone cyst. This is the fourth paediatric case of this very rare benign tumour.
authors.affiliation: Department of Radiology, Royal Hospital for Sick Children, Dalnair Street, Yorkhill, Glasgow, G3 8SJ, UK. kaajilogba@doctors.net.uk
authors.forename: Kaseem A
authors.initials: KA
authors.lastname: Ajilogba
authors.forename: Harjeet
authors.initials: H
authors.lastname: Kaur
authors.forename: Rodney
authors.initials: R
authors.lastname: Duncan
authors.forename: Jeannette H
authors.initials: JH
authors.lastname: McFarlane
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Watt
mesh_terms: D017824:Bone Cysts, Aneurysmal / Q000000981:diagnostic imaging / Q000473:pathology*; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D013848:Thigh / Q000000981:diagnostic imaging / Q000473:pathology*; D018084:Ultrasonography, Interventional