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KMID : 0829220190430040127
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Korean Journal of Oral and Maxillofacial Pathology
2019 Volume.43 No. 4 p.127 ~ p.131
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Ameloblastic Carcinoma ex Acanthomatous Ameloblastoma of the Maxillary Sinus: A Case Report
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Cho Keuk-Je
Kim Keun-Hwan
Kim Ho-Joon
Shin Hong-In
Kwon Tae-Geon
Choi So-Young
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Abstract
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Ameloblastoma is an odontogenic tumor characterized by various sites of metastasis, malignant transformation, and a high recurrence rate over time. Ameloblastic carcinoma(AC) is the term reserved for an ameloblastoma with histologic evidence of malignancy in the primary tumor. AC is classified into two types: most ACs occur de novo, and only few cases of malignant transformation of ameloblastoma become apparent. Here, we report a case of AC, arising from recurrent acanthomatous ameloblastoma on the maxillary sinus, in a 60-year-old male patient. The mass was first diagnosed as acanthomatous ameloblastoma; subsequently, surgical curettage was performed thrice while partial maxillectomy was performed twice. On the fifth recurrence, the tumor was identified as AC.
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KEYWORD
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Ameloblastic carcinoma, Metastasis, Acanthomatous ameloblastoma, Maxillary sinus
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