Cases reported "Osteoma"

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1/3. osteoma of the external auditory canal.

    A case of osteoma of the external auditory canal in a 19-year-old male patient was reported. The differentiation between osteoma and exostosis was discussed clinically, histopathologically and scanning electron microscopically.
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2/3. Osteomas and exostoses of the external auditory canal - medical and surgical management.

    Osteomas and exostoses have distinct clinical and histopathologic features. Osteomas are usually solitary, pedunculated, bony growths attached to the tympanosquamous or tympanomastoid suture line, characterized histologically by an internal structure of abundant discrete fibrovascular channels surrounded by irregularly oriented lamellated bone. exostoses are usually multiple, bilaterally symmetrical, broad based elevations of bone involving the tympanic bone. They are histologically characterized by parallel, concentric layers of subperiosteal bone. The infrequent symptoms resulting from these lesions can usually be managed medically; however, on occasion surgical removal is indicated. While surgical removal of the osteoma is usually possible via the external auditory meatus, we recommend that an exostosis be removed utilizing a postauricular approach.
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keywords = exostosis
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3/3. osteoma of the mandibular condyloid process. Case report.

    The incidence of true osteoma in the mandibular condyloid process is extremely rare. An unusual case in a 35-year-old man with a classic picture of facial asymmetry is reported. Because of the microscopic similarity of benign osteogenic neoplasma and the hyperplastic overgrowths, the diagnosis of osteoma is sometimes difficult. We believe that the essential differences between an osteoma and an exostosis lie in the location of the overgrowth, the extent of involvement of the condyle, and the age of the patient. Surgical excision is justified because benign tumors of bone do not invariably retain their innocent characteristics.
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keywords = exostosis
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