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; Fukuda, Yasuo; Kreiborg, Sven; Mallya, Sanjay M.; Yang, Fan pei Gloria; Murakami, Shumei

doi:https://doi.org/10.1007/s11282-022-00649-4

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:860（2025-07-02 16:01 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 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 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

Resource Type	journal article
Local Type	Journal Article
DCMI Type	Text
DCTERMS.bibliographicCitation	Oral Radiology. 2022, 39, p. 220-224
DC.title	MR appearance of a rare ameloblastic fibroma with formation of dental hard tissues with histopathologic correlation: a case report
DC.creator	Hamamoto, Makihito
	Shimamoto, Hiroaki
	Oya, Kaori
	Fukuda, Yasuo
	Kreiborg, Sven
	Mallya, Sanjay M.
	Yang, Fan pei Gloria
	Murakami, Shumei
DC.publisher	Springer
DC.language' scheme='DCTERMS.RFC1766	English
DC.type' scheme='DCTERMS.DCMIType	Text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-08-24
DC.identifier	https://doi.org/10.1007/s11282-022-00649-4
DC.subject	Ameloblastic fibro-odontoma
	Ameloblastic fibroma
	MRI
	Benign tumor
	Hamartoma
DC.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
DCTERMS.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.
DC.format	89368
citation_title	MR appearance of a rare ameloblastic fibroma with formation of dental hard tissues with histopathologic correlation: a case report
citation_author	Hamamoto, Makihito
	Shimamoto, Hiroaki
	Oya, Kaori
	Fukuda, Yasuo
	Kreiborg, Sven
	Mallya, Sanjay M.
	Yang, Fan pei Gloria
	Murakami, Shumei
citation_publisher	Springer
citation_language	English
citation_date	2022-08-24
citation_journal_title	Oral Radiology
citation_volume	39
citation_firstpage	220
citation_lastpage	224
citation_doi	https://doi.org/10.1007/s11282-022-00649-4
citation_public_url	https://hdl.handle.net/11094/89368

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

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