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Neuroradiology. 2012 Jul;54(7):765-9. doi: 10.1007/s00234-011-0973-9. Epub 2011 Nov 15.

Sino-orbital osteoma with osteoblastoma-like features: case reports.

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  • 1Department of Radiology, Medical Faculty, Uludag University, Gorukle Campus, Bursa 16059, Turkey.


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.

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