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Related Experiment Video

Updated: Dec 26, 2025

Establishment of Cancer Stem Cell Cultures from Human Conventional Osteosarcoma

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Published on: October 14, 2016

Ameloblastic fibrosarcoma - A rarity?

M S Munisekhar¹, Sanjeevareddigari Shylaja², R Vijay Kumar³

¹Department of Preventive Dentistry, College of Dentistry, Jouf University, Sakaka, Kingdom of Saudi Arabia.

|March 12, 2020

Summary

Ameloblastic fibrosarcoma (AFS), a rare malignant odontogenic tumor, presents diagnostic challenges. This case highlights potential underdiagnosis and questions current treatment protocols for ameloblastic fibroma (AF).

Keywords:

Ameloblastic fibroma Ameloblastic fibrosarcoma Odontogenic fibrosarcoma Odontogenic sarcoma

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Area of Science:

Oral Pathology
Oncology
Odontogenic Tumors

Background:

Ameloblastic fibrosarcoma (AFS) is a rare malignant odontogenic tumor, defined by the WHO as an odontogenic sarcoma.
AFS shares structural similarities with ameloblastic fibroma (AF) but exhibits sarcomatous features in its ectomesenchymal component.
While some AFS arise de novo, a significant proportion develop from recurrent ameloblastic fibromas.

Observation:

A rare case of an aggressive odontogenic neoplasm is presented, initially showing features of AF on incisional biopsy.
Excisional biopsy revealed malignancy, consistent with Ameloblastic Fibrosarcoma (AFS).
This diagnostic discrepancy underscores the challenges in differentiating benign and malignant odontogenic lesions.

Findings:

The study discusses diagnostic difficulties associated with Ameloblastic Fibrosarcoma (AFS).
It questions the reported rarity of AFS, suggesting potential underdiagnosis.
A significant percentage (44%) of AFS cases arise from recurrent Ameloblastic Fibroma (AF).

Implications:

The findings suggest a need to re-evaluate diagnostic criteria for distinguishing AF from AFS.
Current treatment protocols for Ameloblastic Fibroma (AF) may require revision given the potential for malignant transformation.
Further research is warranted to understand the pathogenesis and improve early detection of Ameloblastic Fibrosarcoma (AFS).