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KMID : 0355620150410010048
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Journal of Korean Association of Oral and Maxillofacial Surgeons
2015 Volume.41 No. 1 p.48 ~ p.51
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Low-grade osteosarcoma arising from cemento-ossifying fibroma: a case report
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Lee Yong-Bin
Kim Nam-Kyoo
Kim Jae-Young
Kim Hyung-Jun
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Abstract
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Cemento-ossifying fibromasare benign tumors, and, although cases of an aggressive type have been reported, no cases of cemento-ossifying fibromatransforming into osteosarcoma have been documented previously. Low-grade osteosarcoma is a rare type of primary bone tumor, representing 1%-2% of all osteosarcomas. A 45-year-old female patient was diagnosed with cemento-ossifying fibroma,treated with mass excision several times over a period of two years and eight months, and followed up. After biopsy gathered because of signs of recurrence, she was diagnosed with low-grade osteo-sarcoma. The patient underwent wide excision, segmental mandibulectomy, and reconstruction with fibulafree flap.The aim of this report is to raise awareness of the possibility that cemento-ossifying fibromacan transform into osteosarcoma and of the consequent necessity for careful diagnosis and treatment planning.
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KEYWORD
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Cemento ossifying fibroma, Low-grade osteosarcom
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