title: McCune-Albright syndrome mimicking malignancy: an endocrine disease from oncologist's perspective.
abstract: Fibrous dysplasia (FD) is categorized as either monostotic or polyostotic and may occur as a component of McCune-Albright syndrome (MAS). Imaging findings can mimic neoplastic diseases. We present a case of MAS initially suspected to have neoplastic disease. A 9-year-old girl was admitted to pediatric emergency with ataxia. Upon hospitalization, an extradural mass was seen on cranial magnetic resonance imaging (MRI) and the bone survey showed lytic lesions in the long bones. The patient was referred to the pediatric oncology department with a presumptive diagnosis of Langerhans cell histiocytosis or metastatic tumor. Further investigations demonstrated that the patient had MAS and coexisting postinfectious cerebellitis. The findings in this patient demonstrate that the radiographic findings and the clinical presentation of FD and MAS may be similar to those of malignant diseases.
authors.affiliation: Anadolu Medical Center, Pediatric Oncology, Kocaeli, Turkey. baharbeker@yahoo.com
authors.forename: D Bahar
authors.initials: DB
authors.lastname: Genç
authors.forename: M Alp
authors.initials: MA
authors.lastname: Özkan
authors.forename: Atilla
authors.initials: A
authors.lastname: Büyükgebiz
mesh_terms: D001859:Bone Neoplasms / Q000175:diagnosis; D002531:Cerebellum / Q000276:immunology; D002648:Child; D003937:Diagnosis, Differential; D018792:Encephalitis, Viral / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy; D004701:Endocrine Gland Neoplasms / Q000175:diagnosis; D005260:Female; D005359:Fibrous Dysplasia, Polyostotic / Q000150:complications / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D020234:Gait Ataxia / Q000209:etiology; D006801:Humans; D016896:Treatment Outcome