title: Sino-orbital osteoma with osteoblastoma-like features: case reports.
abstract: Most of the orbital osteomas arise from the adjacent paranasal sinuses. Some of them may contain osteoblastoma-like areas and may be misdiagnosed as osteoblastoma, both radiologically as well as histopathologically. Sino-orbital osteomas with osteoblastoma-like features show a typical radiological appearance. They have a distinct zonal pattern, in which less dense osteoblastoma-like areas are located at the base of the lesion and dense mature bone is located at the periphery. These broad-based bone lesions also have a tendency for extracavitary polypoid growths from the paranasal sinus into the adjacent orbit. We report here the CT and MR imaging findings of three cases with sino-orbital osteoma with osteoblastoma-like features.
authors.affiliation: Department of Radiology, Medical Faculty, Uludag University, Gorukle Campus, Bursa 16059, Turkey. zyazici@uludag.edu.tr
authors.forename: Zeynep
authors.initials: Z
authors.lastname: Yazici
authors.forename: Bulent
authors.initials: B
authors.lastname: Yazici
authors.forename: Ulviye
authors.initials: U
authors.lastname: Yalcinkaya
authors.forename: Gokhan
authors.initials: G
authors.lastname: Gokalp
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D003287:Contrast Media; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009918:Orbital Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D018215:Osteoblastoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D010016:Osteoma / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D010255:Paranasal Sinus Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media
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