title: Periosteal osteoblastoma of the distal femur.
abstract: Periosteal osteoblastoma is a rare benign osteoblastic bone tumour located on the cortical bone. We report a case of periosteal osteoblastoma located at the distal femur in a 31-year-old man. Clinical, radiological and histopathologic findings are described and differential diagnosis is discussed. Despite its rarity, periosteal osteoblastoma should be considered as a possible diagnosis together with periostitis ossificans, periosteal chondroma, periosteal osteosarcoma and parosteal osteosarcoma when confronted with a superficial bone lesion.
authors.affiliation: Department of Orthopaedics and Traumatology, Izmir Tepecik Training and Research Hospital, Izmir, Turkey. drahmetkaya@yahoo.com
authors.forename: Ahmet
authors.initials: A
authors.lastname: Kaya
authors.forename: Taskin
authors.initials: T
authors.lastname: Altay
authors.forename: Murat
authors.initials: M
authors.lastname: Sezak
authors.forename: Hasan
authors.initials: H
authors.lastname: Ozturk
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005266:Femoral Neoplasms / Q000175:diagnosis*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D018215:Osteoblastoma / Q000175:diagnosis*; D010521:Periosteum; D014057:Tomography, X-Ray Computed