title: Ewing's sarcoma presenting as a solitary cyst.
abstract: This case describes a 10-year-old girl who developed a Ewing's sarcoma in her proximal fibula. The radiologic features mimicked those of a unicameral bone cyst. The presence of pain and the atypical location led to a prompt biopsy and the correct diagnosis. The mechanism of this unusual radiographic presentation is discussed.
authors.affiliation: School of Medicine, Johns Hopkins University, Baltimore, MD 21218, USA.
authors.forename: S
authors.initials: S
authors.lastname: Hammoud
authors.forename: F J
authors.initials: FJ
authors.lastname: Frassica
authors.forename: E F
authors.initials: EF
authors.lastname: McCarthy
mesh_terms: D001845:Bone Cysts / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D005360:Fibula / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D011859:Radiography; D012512:Sarcoma, Ewing / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology