Fig 2 - available via license: Creative Commons Attribution-NonCommercial 3.0 Unported
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Photomicrograph of osteoma: The lesion is composed of dense, mature, pure trabecular bone completely covered with stratified squamous epithelium. (¡¿ 4 Hematoxylin and Eosin)
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An osteoma is a protruding mass composed of abnormally dense but otherwise normal bone and arises in the periosteum. It is usually found in the skull or facial bone, most often in the frontal or ethmoid sinuses, rarely occurring in the external auditory canal. The mass is usually hard and painless, and is connected to the osseous canal by its stalk...
