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KMID : 0829220200440060169
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Korean Journal of Oral and Maxillofacial Pathology
2020 Volume.44 No. 6 p.169 ~ p.175
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Synchronous Osteosarcoma and Squamous Cell Carcinoma at the Mandible
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Kim Jung-Hun
Han Da-Wool
Kim Dong-Wook
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Abstract
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Parosteal osteosarcoma, a subtype of juxtacortical osteosarcoma, has a better prognosis compared to central osteosarcoma with a relatively low risk for recurrence and metastasis. Rarely, it can arise synchronously with other malignant tumors. Synchronous malignancies are defined as the occurrence of a second primary malignancy within 6 months of the appearance of the first malignancy. Here in, we introduce a 64-year-old woman who visited the Department of Oral & Maxillofacial Surgery, Yonsei University Dental Hospital with a 2 year history of a whitish verrucous lesion on the palate. She presented an exophytic mass on mandible during the following visits. Histopathologic evaluation revealed a synchronous parosteal osteosarcoma and squamous cell on right mandible and a precancerous verrucous leukoplakia on the palate.
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KEYWORD
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Parosteal osteosarcoma, Mandible, Squamous cell carcinoma, Synchronous
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