Ameloblastic fibroma is a rare mixed odontogenic tumor comprising neoplastic epithelial and mesenchymal tissues. Ameloblastic fibroma is a relatively uncommon benign tumor of mixed odontogenic origin that can occur in either the mandible or the maxilla, but is most frequent in the posterior region of mandible. Oct 31, 2008 other mixed odontogenic lesions, such as ameloblastic fibroodontomas and odontomas share some clinical, radiographic and histologic similarities with ameloblastic fibroma. Like most odontogenic tumors, ameloblastic fibroma af was formerly classified as an adamantinoma.
Af appearing as a mixed radiographic image is very rare. The posterior region of the mandible is the predominantly occupied site. Ameloblastic fibroma af is an uncommon benign odontogenic tumour, with both epithelial and mesenchymal neoplastic proliferation. Chondromyxoid fibroma cmf is an extremely rare, benign cartilaginous tumor that makes up case description. Ameloblastic fibroma definition of ameloblastic fibroma by. The histopathology of an ameloblastic fibroma is unique but is too often confused with that of an ameloblastoma. They are usually encountered in children, emphasizing it as an important diagnostic consideration. A rare case appearing as a mixed radiographic image. It may be either truly neoplastic or merely hamartomatous an odontoma. Yan chen, tiejun li, yan gao, shi feng yu, ameloblastic fibroma and related lesions.
It often occurs in the first or second decade of life. Ameloblastic fibroma, is a mixed odontogenic tumor, which commonly affects young children under the age of 20 years, with the mandibular premolarmolar region being the. An ameloblastic fibroma is a fibroma of the ameloblastic tissue, that is, an odontogenic tumor arising from the enamel organ or dental lamina. Ameloblastic fibroma is a relatively rare benign odontogenic tumor in which both the epithelial and ectomesenchymal components are neoplastic. This is a pdf file of an unedited manuscript that has been accepted for publication. Ameloblastic fibroma af is a rare tumor, accounting for 2% of all odontogenic tumors, characterized by simultaneous neoplastic proliferation of mesenchymal and epithelial components, with no formation of hard dental tissues. Ameloblastic fibroma af is an extremely rare true mixed benign tumor that can occur in either the mandible or the maxilla, but is most frequently. Early diagnosis and proper management will prevent comprehensive orthodontic treatment. The ameloblastic fibroma is an uncommon odontogenic tumour that may present an aggressive behaviour and may have the potential for malignant transformation. Ameloblastic fibroma an overview sciencedirect topics. We report a case of a 35yearold female with a 3 month history of lower back pain after sustaining a fall on her sacrumcoccyx presenting with a progressive complaint of localized lower back pain, occasional urinary retention without incontinence, gluteal hypesthesia, and. Ameloblastic fibroodontoma afo is a rare benign mixed odontogenic tumor that usually arises in the maxilla and mandible.
It usually occurs in the first two decades of life and is associated with tooth enclosure, causing a delay in eruption or altering the dental eruption. Ameloblastic fibroma is a rare benign mixed epithelial and mesenchymal odontogenic tumour as it contributes to approximately 2% of all odontogenic tumours. To integrate the available data published on ameloblastic fibrodentinoma afd and ameloblastic fibroodontoma afo into a comprehensive analysis of its clinicalradiologic features. Ameloblastic fibroma definition of ameloblastic fibroma. Dimensions of the tumor, which were the result of long standing. It is generally believed to be less aggressive than. Jun 10, 2014 educational video by unmc college of dentistry class of 2016 dental students.
Oral surgery, oral medicine, oral pathology, oral radiology and endodontology, 103 4, 516520. However, recent reports have suggested that this lesion has the potential for recurrence and malignant transformation. In the past, it was suggested that these lesions represented a spectrum of a single entity, with ameloblastic fibromas, the least differentiated of the tumors, maturing and. Other mixed odontogenic lesions, such as ameloblastic fibroodontomas and odontomas share some clinical, radiographic and histologic similarities with ameloblastic fibroma. Ameloblastic fibroodontoma is a benign epithelial odontogenic tumour with odontogenic mesenchyme exhibiting the histologic characteristics of ameloblastic fibroma and complex odontoma. Ameloblastic fibroma, differential diagnosis, incidental finding, mixed image, radiographic features. Ameloblastic fibroodontoma bears resemblance to ameloblastic fibroma, ameloblastic fibrodentinoma. The authors have presented the case of ameloblastic fibroma of the upper jaw in 21 years old adult. Dec 01, 2014 ameloblastic fibroma af is a benign tumor of mixed odontogenic origin, which affects predominantly young individuals. Ameloblastic fibroma conservative treatment in children. They, therefore, appear very similar to unilocular ameloblastomas. A modified block resection of the mandible with the placement of an immediate autologous bone graft is treatment option for an extensive tumor andor. A survey of cases from the armed forces institute of pathology.
Ameloblastic fibro odontoma average age 10 tumor with features of ameloblastic from biol 228 at montgomery college. The ameloblastic fibroodontoma afo is a rare benign odontogenic defined as a tumour with the general features of ameloblastic fibroma but that also contains enamel and dentin. Ameloblastic fibroma case report and discussion about. This report describes a case of af in a 12yearold male identified during a routine radiographic exam for orthodontic treatment planning. Ameloblastic carcinosarcoma of the mandible arising in. Educational video by unmc college of dentistry class of 2016 dental students. An unconventional ameloblastic fibroodontoma with compound. The present study involves twentyfour acceptable cases of ameloblastic fibroma from the files of the armed forces institute of pathology.
The purpose of this article is to describe a rare case of ameloblastic fibroma af with atypical localization with long term followup period. Ameloblastic fibroma, is a mixed odontogenic tumor, which commonly affects young children under the age of 20 years, with the mandibular premolarmolar region being the most common site of. Ameloblastic odontoma definition of ameloblastic odontoma. Ameloblastic fibroma af is an extremely rare true mixed benign tumor that can occur in either the mandible or the maxilla, but is most.
Nagel 1935 was the first to point out that these soft tumors should not be confused with the semimalignant, purely epithelial ameloblastomas. The term ameloblastic fibroodontoma represents a histological combination of ameloblastic fibroma and a complex odontoma. Afo is a mixed odontogenic tumor and shares features with ameloblastic fibroma af and odontoma. A case report hyunho chang, dds, msd, phd michael s. The aim of this study was to describe a case of a second decade of life patient, asymptomatic, that was diagnosed the lesion above cited, being latter carried surgical treatment for tumor removal. Mohapatra pk, choudhury ar, parkash h 2000 ameloblastic fibroma in the midline of mandible. Ameloblastic fibroma of the maxilla with bilateral. Ameloblastic fibroodontoma afo is a benign, slow growing, expansile epithelial odontogenic tumor with odontogenic. Ameloblastic carcinosarcoma of the mandible arising in ameloblastic fibroma. Ameloblastic fibroma is a true mixed neoplasm of odontogenic origin characterized by the proliferation of both odontogenic epithelium and mesenchymal tissue without the formation of enamel or dentin. Ameloblastic fibro odontoma average age 10 tumor with. An 8yearold caucasian boy was referred to the dentist for evaluation of failed eruption of the maxillary left first molar. Ameloblastic fibroma af is a relatively uncommon benign neoplasm of odontogenic origin comprising about 1.
In neoplastic cases, it may be labeled an ameloblastic fibrosarcoma in accord with the terminological distinction that reserves the word fibroma for. Ameloblastic fibrosarcoma pdf to download pdf you need. According to the 2005 who classification of odontogenic tumors, it is defined as a benign tumor that resembles ameloblastic fibroma but contains enamel and dentin. It occurs most frequently in the posterior region of the mandible, while its occurrence in the maxilla is extremely rare. Hybrid odontogenic tumor of calcifying odontogenic cyst and ameloblastic fibroma. The diagnosis was ameloblastic fibroodontoma, which is a rare mixed odontogenic tumor, derived from epithelial and ectomesenchymal elements that form the dental tissues. It is generally believed to be less aggressive than ameloblastoma. Ameloblastic fibrodentinoma and ameloblastic fibro. Mandible maxilla benign tumors tumorlike conditions ameloblastic fibroma.
They are composed of enamel and embryonic connective tissue. Ameloblastic fibroma af is an extremely rare true mixed benign tumor that can occur in either the mandible or the maxilla, but is most frequently found in the posterior region of the mandible. The ameloblastic fibroma is considered a true mixed odontogenic tumor, in which epithelial and mesenchymal tissues are neoplasics. Despite all the efforts to clarify the pathogenesis of odontogenic tumours, the origin of the ameloblastic fibroma is still uncertain. Case report of an early diagnosed ameloblastic fibroma caspian. Ameloblastic fibroma usually appears as painless swelling of the jaw in the posterior region of the mandible. This hypothesis has been refuted since recurrent afs show no evidence of maturation to ameloblastic fibroodontoma or odontoma. Ameloblastic fibroma europe pmc article europe pubmed. Ameloblastic fibroma europe pmc article europe pubmed central. Malignant trans formation of ameloblastic fibroma to ameloblastic fibrosarcoma. The tumor predominantly affects the posterior region of the mandible 24 in patients during the first and second.
Ameloblastic fibrosarcoma pdf amaryl lids to download pdf. Ameloblastic fibroodontoma is defined as a lesion similar to ameloblastic fibroma but also shows inductive changes that lead to the formation of enamel and dentin 5. The students should have knowledge about the basic information, histopathological and clinical features of ameloblastic fibroma. Afs is characteristically composed of a benign odontogenic epithelium and a malignant mesenchymal component. We report a case of a 35yearold female with a 3 month history of lower back pain after sustaining a fall on her sacrumcoccyx presenting with a progressive complaint of localized lower back pain, occasional urinary retention without incontinence. Presentations ppt, key, pdf logging in or signing up.
Pdf after reading the text an aggressive ameloblastic fibroma in a. Ameloblastic fibroma, is a mixed odontogenic tumor, which commonly affects young children under the age of 20 years, with the mandibular premolarmolar. Small islands and cords of markedly attenuated ameloblastic epithelium two cells thick within dense collagenous stroma that is often immature. Ameloblastic fibroma case report and discussion about relationship of mixed odontogenic tumors. In support of this viewpoint, trodahl and carr et al. Oct 31, 2008 ameloblastic fibroma ameloblastic fibroma nelson, brenda. It is usually associated with developing teeth and occurs predominantly in children and adolescents.
Ameloblastic fibromas appear as unilocular lucent mandibular lesions, most frequently in the posterior mandible, and are usually associated with impacted teeth, centered on the unerupted crown. Mcdonald, in mcdonald and averys dentistry for the child and adolescent tenth edition, 2016. Amaryl lids to download pdf you need some things, like my website and the name of the file. It is a rare tumor accounting for % of all odontogenic tumors 3. Ameloblastic fibroma ameloblastic fibroma nelson, brenda. In the ameloblastic fibroma, the preameloblast island areas are smaller, and the surrounding connective tissue is not the eosinophilicstaining stromal collagen but a more bluegraystaining cellular tissue without collagen production, representing odontogenic mesenchyme fig. Ameloblastic fibroodontoma radiology reference article. Ameloblastic fibrodentinoma and ameloblastic fibroodontoma.
577 403 6 443 1356 502 1375 290 200 703 208 1415 1084 1128 243 210 1181 523 1617 661 220 1001 494 1113 1423 791 378 898 456 1367 824 8 83 748