MR appearance of a rare ameloblastic fibroma with formation of dental hard tissues with histopathologic correlation: a case report

Hamamoto, Makihito; Shimamoto, Hiroaki; Oya, Kaori et al.

Oral Radiology, 2022, 39, 220-224

Number of Access:1,158（2025-11-13 22:21 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/89368

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Title
MR appearance of a rare ameloblastic fibroma with formation of dental hard tissues with histopathologic correlation: a case report
Creator
CreatorName
Hamamoto, Makihito
NRID
1000030448112 1000030448112
researchmap permalink
read0127765 read0127765
Scopus Author ID
14026102500 14026102500
ORCID
0000-0001-5609-266X 0000-0001-5609-266X
CreatorName
Shimamoto, Hiroaki
NRID
1000000779126 1000000779126
researchmap permalink
1-9ss 1-9ss
Scopus Author ID
55325695400 55325695400
CreatorName
Oya, Kaori
NRID
1000020238489 1000020238489
researchmap permalink
374qzt7y8nv9 374qzt7y8nv9
Scopus Author ID
8219722000 8219722000
CreatorName
Fukuda, Yasuo
Scopus Author ID
7005118871 7005118871
CreatorName
Kreiborg, Sven
CreatorName
Mallya, Sanjay M.
CreatorName
Yang, Fan pei Gloria
NRID
1000000263301 1000000263301
researchmap permalink
shumeimurakami shumeimurakami
Scopus Author ID
55519930800 55519930800
ORCID
0000-0003-3977-2422 0000-0003-3977-2422
CreatorName
Murakami, Shumei
Subject
Ameloblastic fibro-odontoma
Ameloblastic fibroma
MRI
Benign tumor
Hamartoma
Description
This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s11282-022-00649-4
Abstract
An ameloblastic fibroma with formation of dental hard tissues, which the classical name is ameloblastic fibro-odontoma (AFO), is a rare type of mixed odontogenic tumor. An 8-year-old boy was diagnosed with AFO, with an inhomogeneous high signal within the lesion shown by T2-weighted magnetic resonance imaging (MRI). Computed tomography (CT) imaging revealed a unilocular low CT value area of 24 × 19 × 26 mm with buccolingual bony expansion and cortical bone thinning on the left side of the mandible including the crown of the mandibular left second molar. In addition, multiple calcified bodies were detected within the lesion, one of which had a CT value of approximately 2200 HU, equivalent to that of enamel. MRI indicated the lesion to be sized 24 × 19 × 25 mm along with buccolingual bony expansion in the left side of the mandible. Additionally, the lesion showed an internal inhomogeneous high signal, while a portion had an especially high signal in T2-weighted images. That particularly high signal area coincided with the nodular growth area of mucus-rich mesenchymal components without the epithelial component in histopathology findings. The particularly high signal revealed by T2-weighted imaging could be attributed to the mucus-rich component. MRI was found useful for revealing differences in the internal histopathological properties of an AFO in our patient.
Publisher
Springer
Source Title
Oral Radiology
Volume (Issue)
39
Page
220-224
Date of Issued
2022-08-24
Language
English
Handle URL
https://hdl.handle.net/11094/89368
PISSN
09116028
eISSN
16139674
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1007/s11282-022-00649-4
Access Rights
open access
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article