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ID 46864
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Author
Fujita, Mariko
Abstract
Aneurysmal bone cysts (ABCs) are classified as bone-related lesions based on the 2005 World Health Organization histological classification of odontogenic tumors. Most ABCs are diagnosed using a combination of conventional radiography, computed tomography, magnetic resonance imaging (MRI), and digital subtraction angiography. ABCs should be differentiated from true cysts or other pseudocysts because their treatment is different. Additionally, unlike other cysts, ABCs pose a hemorrhagic risk in surgery; thus, preoperative evaluation of intralesional blood flow is required. Here we report a case of a mandibular ABC in a 39-year-old woman and focus on its dynamic contrast-enhanced MRI (DCE-MRI) features. On DCE-MRI, the lesion was divided into two areas according to the enhancement pattern: the blood-pooling and blood-flow areas. The series of DCE-MR images of the blood-pooling area showed marked enhancement of the margin, but no enhancement in the inner part of the cavity. Additionally, the time-signal intensity curve (TIC) demonstrated no change in the signal intensity (SI) until approximately 15 min after gadolinium-diethylenetriamine penta-acetic acid (Gd-DTPA) administration. In contrast, the series of DCE-MR images of the blood-flow area exhibited marked enhancement in the cyst cavity in the early phase. The TIC showed a rapid increase in SI in the early phase, followed by a rapid decrease until 150 s, and finally a gradual decrease until approximately 15 min after Gd-DTPA administration. Thus, in the current patient, preoperative DCE-MRI clearly delineated the vessel-rich area within the lesion.
Keywords
Aneurismal bone cyst
Dynamic contrastenhanced MRI
MRI
Note
The final publication is available at www.springerlink.com..
http://dx.doi.org/10.1007/s11282-010-0048-3
Published Date
201012
Publication Title
Oral Radiology
Volume
volume26
Issue
issue2
Publisher
Springer
Start Page
110
End Page
115
ISSN
0911-6028
NCID
AA10689728
Content Type
Journal Article
language
英語
Copyright Holders
© Japanese Society for Oral and Maxillofacial Radiology and Springer 2010
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Refereed
True
DOI
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