Mandible / maxilla – Malignant tumors: ameloblastic fibrosarcoma. 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.

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The posterior mandible is the most commonly affected site asrcoma 8 ]. The duration of symptoms varies widely from a few weeks up to 2 years [ 7 ]. Histopathological examination showed the same biphasic tumor previously described.

At the center of these islands is polyhedral cell reminiscent of stellate reticulum.

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

Dent Res J Isfahan. Open in a separate window. Ameloblastic fibrosarcoma of the jaw: This article has been cited by other articles in PMC.

Case Report A year-old female presented with a 2-month history of an asymptomatic swelling in her left mandible. Gross photograph of the cut surface of the left half of the mandible showing a solid gray tumor mass. Immunohistochemical study and review of the literature.

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

Recently, some authors have suggested a panel of biomarkers associated with cell proliferation Ki67, PCNA, and 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. Assessment of growth potential by MIB-1 immunohistochemistry in ameloblastic fibroma and related lesions of the jaws compared with ameloblastic fibrosarcoma.


Abstract Ameloblastic fibrosarcoma is an uncommon odontogenic tumor composed of a benign epithelial component and a malignant ectomesenchymal component most frequently seen in the third and fourth decades of life. J Pediatr Hematol Ameloblasttic. It is critical to differentiate AFS, especially low-grade variant, from ameloblastic fibroma, and recently, several immunohistochemical studies with Ki67, Bcl-2, PCNA, c-KIT, xarcoma P53 have been performed, suggesting that proliferating markers in association to histopathologic features could be useful for identifying the malignant tumor.

Pathology and Genetics of Head sarcomw Neck Tumours. Age and gender distribution of 68 cases of Ameloblastic fibrosarcoma age or gender of three cases of 71 reported AFSs have not been specified. Only mesenchymal component represents sarcomatous alterations and ameloblast-like epithelial nest remains bland in AFS. Histologically, it consisted of a mixed epithelial-mesenchymal odontogenic neoplasm composed of benign islands of well-differentiated ameloblastic epithelium within a malignant fibrous stroma consisting of fbro cells or fibroblasts with a brisk mitotic activity.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, swrcoma reproduction in any medium, provided the original work is properly cited.

Pathology Outlines – Malignant tumors: ameloblastic fibrosarcoma

CK was strongly positive in the odontogenic epithelium and negative in the mesenchymal component, while Vimentin was strongly positive in the mesenchymal component and negative in the odontogenic epithelium. Pathology Research and Practice. However, adjuvant radiotherapy was also performed in order to ensure a better outcome.


Left half of mandible. The malignant spindle cell proliferation showed positive staining with p and a high proliferation index with ki Ameloblastic fibrosarcoma, maxilla, odontogenic tumor.

Therefore, their role in early diagnosis of diseases especially malignancies is crucial. Click here for patient related inquiries. Although AFS is regarded as the malignant counterpart of ameloblastic fibroma, it may arise de novo without any pre-existing lesion. As expected, the pain persisted and healing of the extraction site was not normal.

Clinicopathologic, histoenzymological and ultrastructural study.

Ameloblastic fibrosarcoma AFS is a rare malignant odontogenic ameloblastkc. Panoramic radiograph a and axial CT scan b revealing an ill-defined radiolucent lesion around an impacted mandibular left first molar. Resection with a wide margin is the optimal treatment strategy and close follow-up is advised due to its relatively high recurrence rate.

J Oral Pathol Med. Author information Article notes Copyright and License information Disclaimer. Report of 2 chemosensitive pediatric cases.