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ID 34250
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Author
Asaumi, Jun-ichi
Konouchi, Hironobu
Shigehara, Hiroshi
Kishi, Kanji
Abstract

The radiographical differentiation of adenomatoid odontogenic tumor (AOT) from dentigerous cysts, calcifying odontogenic cysts, calcifying epithelial odontogenic tumors, odontogenic keratocysts, and amelobastomas is sometimes difficult. We attempted to differentiate AOT from other lesions similar to AOT in radiographic findings using MRI. The MRI features of AOT in our 3 cases included homogeneous low SI in the cystic portion and homogeneous intermediate SI in the solid portion on T1WI, homogeneous high SI in the cystic portion and intermediate to slightly high SI in the solid portion on T2WI, and enhancement of only the solid portion on CE-T1WI although non of the sequences included SI of calcifications. The contrast index curves in the 3 cases of AOT showed a gradual increase to 300 s, which signified a benign tumor. These MRI features were characteristic features of AOT and might be a basis for differentiating AOT from the above possible lesions in radiographic examinations.

Keywords
AOT
odontogenic tumor
odontogenic cyst
MRI
DCE-MRI
Note
Digital Object Identifer: 10.1016/j.ejrad.2003.09.009
Published with permission from the copyright holder. This is the author's copy, as published in European Journal of Radiology, September 2004, Volume 51, Issue 3, Pages 252-256.
Publisher URL: http://dx.doi.org/10.1016/j.ejrad.2003.09.009
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Copyright © 2004 Elsevier Ireland. Ltd. All rights reserved.
Published Date
2004-9
Publication Title
European Journal of Radiology
Volume
volume51
Issue
issue3
Start Page
252
End Page
256
Content Type
Journal Article
language
英語
Refereed
True
DOI
Web of Sience KeyUT
Submission Path
medicine_general/4