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KMID : 0357920090430010088
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Korean Journal of Pathology
2009 Volume.43 No. 1 p.88 ~ p.91
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Intraosseous Neurilemmoma of the Mandible - A Case Report -
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Jang Kyu-Yun
Park Ho-Sung
Moon Woo-Sung
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Abstract
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Neurilemmoma (Schwannoma) is a benign nerve sheath tumor that’s composed entirely of welldifferentiated Schwann cells. Intraosseous neurilemmomas are rare and they represent less than 1% of all benign primary bone tumors. We report here on an additional case of intraosseous neurilemmoma that was located in the mandible of a 77-year-old woman. CT revealed an expansile, well-defined lesion on the right side of the mandibular body with thinning of the cortex. The lesion was surgically removed and it was found to be a 2×1.7 cm-sized, bright yellowish, hard mass with hemorrhage and cyst formation. Histologically, the mass was a moderately cellular neoplasm and it showed distinct nuclear palisading, numerous Verocay bodies and tumor cells that were positively immunohistostained for S-100 protein. Two months after the operation, the patient has remained in a good condition with no signs or symptoms of tumor recurrence.
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KEYWORD
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Mandibular neoplasms, Neurilemmoma, Bone neoplasms
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