1. Eur Ann Otorhinolaryngol Head Neck Dis. Feb;(1) doi: / Epub Jul 9. A case of an ameloblastic fibrosarcoma in the mandible is described. The primary tumor was seen in a 5-year-old child. In spite of repeated surgical. Introduction. Ameloblastic fibrosarcoma (AFS) is a rare malignant odontogenic tumor. It can arise de novo, however one-third of cases may arise from a recurrent.

Author: Zuramar Faeramar
Country: Belize
Language: English (Spanish)
Genre: Career
Published (Last): 1 October 2012
Pages: 439
PDF File Size: 6.42 Mb
ePub File Size: 10.27 Mb
ISBN: 761-4-49492-313-3
Downloads: 22758
Price: Free* [*Free Regsitration Required]
Uploader: Toran

Ameloblastic Fibrosarcoma of the Mandible: A Case Report and Brief Review of the Literature

Ameloblastic fibrosarcoma, maxilla, odontogenic tumor. Ameloblastic fibrosarcoma is an uncommon odontogenic tumor composed fibrrosarcoma a benign epithelial component and a malignant ectomesenchymal component most frequently seen in the third and fourth decades of life.

Five cases of tumor of jaws treated by excision. Resection with a wide margin is the optimal treatment strategy and close follow-up is advised due to its relatively high recurrence rate. All these components are included in a highly cellular malignant connective stromal component, with cells showing variable degrees of anaplasia 1. As anaplasia is not distributed uniformly throughout the tumor, definitive diagnosis can be made only from surgically removed pieces, as in the present ameloblsatic.

Differential expression of collagen IV alpha1 to alpha6 chains in basement membranes of benign and malignant odontogenic tumors. AFS is ameloblasgic highly recurrent lesion. Contemp Clin Dent ;3: The present case clearly demonstrates the importance of aggressive fibrosagcoma treatment, as the patient remained disease-free after only one surgical procedure.

Odontogenic tumors and tumor-like lesions constitute a rare group of heterogeneous diseases that range from nonneoplastic tissue proliferations to malignant tumors with metastatic potential. Currently, one year after the surgical procedure, the patient is clinically and radiologically disease-free Figure 7.


Ameloblastic fibrosarcoma: a rare malignant odontogenic tumor.

Fibrozarcoma, some authors have suggested a panel of biomarkers associated with cell proliferation Ki67, PCNA, amelobllastic c-KIT and apoptosis Bcl2 to overcome difficulties in the diagnosis of low-grade tumors and evaluate the growth potential in the mesenchymal component without considering clinical and radiographic findings.

Ameloblastic fibrosarcoma of the jaws – report of three cases. Based on the findings, segregation among ameloblastic fibrosarcoma, ameloblastic fibrodentinosarcoma and ameloblastic fibro-odontosarcoma seems illogical, considering all these lesions have similar predilections and outcomes.

Nihon Koku Geka Gakkai Zasshi ; Histopathological examination revealed a biphasic tumor composed of inconspicuous islands of benign odontogenic epithelium firosarcoma an abundant malignant mesenchymal component with marked cellularity, nuclear pleomorphism, hyperchromatism, and moderate mitotic figures with clear margins; one year after the surgical procedure, the patient is clinically and radiologically disease-free.

Acta Chir Scand ; At the center of these islands is polyhedral cell reminiscent of stellate reticulum. Failure to correctly evaluate the panoramic radiographs and establish a clinical differential diagnosis by the general practitioner should be given special attention.

All these lesions displayed very similar clinical-demographic and prognostic features.

Here is described a case of ameloblastic fibrosarcoma AFS affecting the posterior mandible of a woman who was treated surgically and recovered without signs of recurrence or metastasis after 12 years of follow-up. The malignant sarcomatous component showed positivity only for vimentin, demonstrating no apparent transdifferentiation signal. Only one peripheral lesion was reported and the bone was free of invasion. A year-old man, educated in an engineering field, from a city in North of Iran was referred to School of Dentistry of Tehran University of Medical Sciences by an oral and maxillofacial surgeon OMFS for oral pathology consultation in winter of Left half of mandible.


Relative frequency of central fiborsarcoma tumors: Cases first treated with a conservative approach have demonstrated lower overall survival, mainly because of multiple relapses and the involvement of other structures Table 3 and Fig.

Ameloblastic fibrosarcoma AFS is a rare malignant odontogenic tumor.

There was a problem providing the content you requested

Ameloblastic fibrosarcoma of the mandible: Finally, sections were counterstained with Harris hematoxylin. An odontogenic lesion was the clinical impression and an incisional biopsy was performed. There were regional and distant metastases reported in less than Malignant transformation of ameloblastic fibro-odontoma to ameloblastic fibrosarcoma. Microscopically, the bland epithelial component of AFS is similar to that seen in ameloblastic fibroma, although it fibrosarocma frequently less prominent.

Ameloblastic Fibrosarcoma of the Mandible: A Case Report and Brief Review of the Literature

Moreover, there are few reports on the proliferative potential of AFS, based qmeloblastic cell cycle markers. Regional and distant metastatic foci were diagnosed in only one patient Clinicopathologic, histoenzymological and ultrastructural study. Restricted molecular abnormalities of certain genes to the malignant transformation.

Adjuvant radiotherapy has been used with no evidence of recurrence [ 9 ]. Ameloblasticc retrospective study of 21 cases of malignant odontogenic tumours from two tertiary health centres in Nigeria. Pathol Res Pract ; Ameloblastic fibrosarcoma of the jaw: