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Case Reports in Radiology
Volume 2018, Article ID 6987050, 5 pages
https://doi.org/10.1155/2018/6987050
Case Report

An Extrafollicular Adenomatoid Odontogenic Tumor Mimicking a Periapical Cyst

1Oral and Maxillofacial Radiology Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2Oral and Maxillofacial Pathology Department, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran

Correspondence should be addressed to Negar Zeini; moc.oohay@iniezrageN

Received 4 April 2017; Accepted 13 July 2017; Published 1 January 2018

Academic Editor: Soon Thye Lim

Copyright © 2018 Farzaneh Mosavat et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Adenomatoid odontogenic tumor (AOT) is a rare noninvasive odontogenic tumor that occurs mostly in the second decade of life. Based on its tooth association, AOT can be classified into three categories of follicular, extrafollicular, and peripheral types; the follicular classification is considered as the most common type of AOT. This study reported a large extrafollicular case of AOT in a 40-year-old female. She was asymptomatic and tumor was detected accidentally by her dental practitioner. Since the panoramic radiograph showed a well-defined unilocular radiolucent lesion, we observed radiopaque spots within the lesion by using cone beam computed tomography. The extrafollicular type can mimic a periapical radiolucent lesion.