COMPARATIVE STUDY
JOURNAL ARTICLE
REVIEW

Ameloblastic fibrosarcoma of the jaws. A clinicopathologic and DNA analysis of five cases and review of the literature with discussion of its relationship to ameloblastic fibroma

S Muller, D C Parker, S B Kapadia, S D Budnick, E L Barnes
Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics 1995, 79 (4): 469-77
7614208
Ameloblastic fibrosarcoma, the malignant counterpart of the ameloblastic fibroma, is a rare odontogenic tumor characterized by benign epithelium and a malignant fibrous stroma. We have compared nuclear DNA content of five ameloblastic fibrosarcomas and three ameloblastic fibromas by image analysis. The three ameloblastic fibromas were diploid, whereas 1 of 5 ameloblastic fibrosarcomas was aneuploid. There was no correlation with histologic grade and aneuploidy. These five new cases were also added to a review of the literature, bringing the total cases of reported ameloblastic fibrosarcomas to 51. The ameloblastic fibrosarcoma occurs at a later age (mean, 27.5 years) compared with reported ameloblastic fibromas (mean, 14.6 to 22 years), which supports a step-wise malignant transformation. There was histologic documentation that 44% of ameloblastic fibrosarcomas developed in ameloblastic fibromas. In view of this data and of the reported cumulative recurrence rate of 18.3% for ameloblastic fibroma, it is recommended that ameloblastic fibromas be treated with complete surgical excision and long-term follow up rather than simple curettage or enucleation.

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