ameloblastic

エナメル芽細胞の

関: ameloblast

WordNet

a cell from which tooth enamel develops

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/09/12 03:54:18」(JST)

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An ameloblastic fibroma is a fibroma of the ameloblastic tissue, that is, an odontogenic tumor arising from the enamel organ or dental lamina. It may be either truly neoplastic or merely hamartomatous (an odontoma). In neoplastic cases, it may be labeled an ameloblastic fibrosarcoma in accord with the terminological distinction that reserves the word fibroma for benign tumors and assigns the word fibrosarcoma to malignant ones. It is more common in the first and second decades of life, when odontogenesis is ongoing, than in later decades. In 50% of cases an unerupted tooth is involved.

Histopathology alone is usually not enough to differentiate neoplastic cases from hamartomatous ones, because the histology is very similar. Other clinical and radiographic clues are used to narrow the diagnosis.

References

Kahn, Michael A. Basic Oral and Maxillofacial Pathology. Volume 1. 2001.

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1. 歯性感染症の疫学、病因、および臨床症状 epidemiology pathogenesis and clinical manifestations of odontogenic infections
2. 歯の解剖学的構造および発達 anatomy and development of the teeth
3. 歯の発達障害 developmental defects of the teeth
4. 乳幼児に対する予防的デンタルケアおよびカウンセリング preventive dental care and counseling for infants and young children

English Journal

Primordial Odontogenic Cyst with Induction Phenomenon (Zonal Fibroblastic Hypercellularity) and Dentinoid Material Versus Archegonous Cystic Odontoma: You Choose!

Argyris PP1, Wetzel SL1, Pambuccian SE2, Gopalakrishnan R1, Koutlas IG3.
Head and neck pathology.Head Neck Pathol.2016 Jun;10(2):237-44. doi: 10.1007/s12105-015-0640-2. Epub 2015 Jul 9.
The most recent A.F.I.P. fascicle defines primordial odontogenic cyst (POC) as a distinct, nonkeratinized, odontogenic cyst of "undetermined origin" forming in the place of a developing normal or supernumerary tooth. However, the majority of examples reported in the literature under this term repres
PMID 26156422

Ameloblastic Fibrosarcoma of the mandible evolving from a prior Ameloblastic Fibroma after two years: an unusual finding.

Bertoni F1, Del Corso G2, Bacchini P3, Marchetti C1, Tarsitano A1.
International journal of surgical pathology.Int J Surg Pathol.2016 Apr 28. pii: 1066896916646448. [Epub ahead of print]
Transformation of an ameloblastic fibroma to an ameloblastic fibrosarcoma has been reported rarely in the literature. The present case report describes such evolution in a patient under long-term follow-up. The patient was first treated in 2008, and he developed the malignant counterpart of the dise
PMID 27130840

Ameloblastic fibro-odontosarcoma of the mandible in a pediatric patient.

Chen SJ1, Zheng XW2, Lin X1, Liu H3.
European annals of otorhinolaryngology, head and neck diseases.Eur Ann Otorhinolaryngol Head Neck Dis.2016 Apr 26. pii: S1879-7296(16)30058-8. doi: 10.1016/j.anorl.2015.11.010. [Epub ahead of print]
INTRODUCTION: Ameloblastic fibro-odontosarcoma is an extremely rare subtype of odontogenic sarcoma, with only 13 cases reported in the literature.CASE REPORT: A 4-year-old male presented with a painless mandibular swelling, which appeared 4months previously. Cone beam computed tomography revealed an
PMID 27130809

Japanese Journal

エナメル上皮線維腫により下顎乳臼歯の萌出遅延をきたした1例

藤田果奈,中野崇,徳倉健,清水幹雄,久保勝俊,内藤宗孝,前田初彦,福田理
小児歯科学雑誌 50(3), 249-255, 2012-06-25
NAID 10030801869

多発性肺転移を伴った巨大な下顎エナメル上皮癌の1例

佐藤(栗林) 和代,小野貢伸,足利雄一 [他]
日本口腔外科学会雑誌 58(3), 137-141, 2012-03-00
NAID 40019244954

Spindle Cell Ameloblastic Carcinoma in a Labrador Retriever Dog

HATAI Hitoshi,IBA Mitsuru,KOJIMA Daisuke,PARK Chun-Ho,TSUCHIDA Yasuhiko,OYAMADA Toshifumi
Journal of Veterinary Medical Science, 2012
… Based on these findings, the tumors were diagnosed as spindle cell ameloblastic carcinoma. …
NAID 130002502168

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