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National Journal of Maxillofacial Surgery
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Year : 2011  |  Volume : 2  |  Issue : 1  |  Page : 89-92

Unicystic ameloblastoma: A diagnostic dilemma

1 Department of Oral and Maxillofacial Surgery, Maulana Azad Institute of Dental Sciences, New Delhi, India
2 Department of Oral and Maxillofacial Surgery, C.S.M. Medical University (Erstwhile K.G. Medical College), Lucknow, India

Correspondence Address:
Zainab Chaudhary
C/o Dr Ravi Nehra, Ch. Daryao Singh Bldg, Upper Bazaar (Near Indian Bank), Modinagar, U.P.
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0975-5950.85863

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Ameloblastoma is a slow-growing, persistent and locally aggressive neoplasm of epithelial origin accounting for 10% out of 30% of all odontogenic tumors. According to the World Health Organization, ameloblastomas are classified into the following types: conventional, unicystic, and peripheral. Unicystic ameloblastoma (UA) refers to those cystic lesions that show clinical, radiographic, or gross features of a mandibular cyst, but on histologic examination show a typical ameloblastomatous epithelium lining part of the cyst cavity, with or without luminal and/or mural tumor growth. We report a case of young female with a radiolucent lesion in the right posterior mandible. Surgical removal of the lesion was performed, with differential diagnosis of a radicular cyst. However, histopathologic examination revealed UA. The patient was kept under observation and showed signs of local bone regeneration. The purpose of presenting this report of a clinical case of UA previously misdiagnosed as radicular cyst is to emphasize the significance of histopathologic examination of all tissue specimens recovered in surgery even when clinical and radiological finding are innocuous.

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