title: Chondroblastoma of the acromion mimicking fibrous dysplasia.
abstract: The authors report the case of a 65-year-old man who presented with an expansive osteolytic lesion in the right acromion, mimicking cystic fibrous dysplasia. Magnetic resonance imaging showed a lesion with intermediate-signal intensity on T1-weighted images and a high-signal intensity on fat suppressed T2-weighted images. The biopsy led to the diagnosis of chondroblastoma. This tumour is rare in flat bones, and may mimic other benign or malignant lesions. It is therefore essential to perform a biopsy in order to obtain a definite diagnosis. The acromion was excised, and replaced with an iliac crest graft.
authors.affiliation: Department of Orthopaedic Surgery, University Hospital, Westfalian Wilhelms University of Münster, Germany. cgebert@uni-muenster.de
authors.forename: Carsten
authors.initials: C
authors.lastname: Gebert
authors.forename: Jendrik
authors.initials: J
authors.lastname: Hardes
authors.forename: Arne
authors.initials: A
authors.lastname: Streitbürger
authors.forename: Volker
authors.initials: V
authors.lastname: Vieth
authors.forename: Horst
authors.initials: H
authors.lastname: Bürger
authors.forename: Winfried
authors.initials: W
authors.lastname: Winkelmann
authors.forename: Georg
authors.initials: G
authors.lastname: Gosheger
mesh_terms: D000174:Acromion / Q000473:pathology / Q000601:surgery*; D000368:Aged; D001707:Biopsy, Needle; D001859:Bone Neoplasms / Q000175:diagnosis* / Q000601:surgery; D016025:Bone Transplantation / Q000379:methods*; D002804:Chondroblastoma / Q000175:diagnosis* / Q000601:surgery; D003131:Combined Modality Therapy; D003937:Diagnosis, Differential; D005357:Fibrous Dysplasia of Bone / Q000175:diagnosis*; D005500:Follow-Up Studies; D006801:Humans; D007085:Ilium / Q000637:transplantation*; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods; D018570:Risk Assessment; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome