Pathology · single question
Ameloblastic Fibroma — what is the most common site?
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Correct answer: A. Posterior Mandible
Posterior Mandible (A) is the most common site for Ameloblastic Fibroma. It is a benign mixed odontogenic tumor containing both epithelial (enamel organ-like) and mesenchymal (dental papilla-like) tissue without any hard tissue formation.
• It typically presents in the 1st-2nd decade of life, often associated with an unerupted tooth.
• Radiographically: well-defined unilocular or multilocular radiolucency, often with an impacted tooth — can resemble a dentigerous cyst.
• Treatment: conservative enucleation (lower recurrence rate than ameloblastoma).
• Compare with Ameloblastoma, which is also most common in the posterior mandible but in an older age group and is more aggressive.
• The posterior mandible (molar-ramus region) is the most common site for most odontogenic tumors.
• It typically presents in the 1st-2nd decade of life, often associated with an unerupted tooth.
• Radiographically: well-defined unilocular or multilocular radiolucency, often with an impacted tooth — can resemble a dentigerous cyst.
• Treatment: conservative enucleation (lower recurrence rate than ameloblastoma).
• Compare with Ameloblastoma, which is also most common in the posterior mandible but in an older age group and is more aggressive.
• The posterior mandible (molar-ramus region) is the most common site for most odontogenic tumors.
- A. The anterior maxilla is not typical. The posterior mandible is the most common site.
- B. The posterior maxilla is sometimes involved, but the posterior mandible remains most common.
- C. While ameloblastic fibroma can rarely occur anteriorly, the posterior mandible is the most common location.
- D. Ameloblastic fibroma most commonly occurs in the POSTERIOR MANDIBLE (molar-premolar region) of young patients, typically in the first two decades of life. It is a benign mixed odontogenic tumor appearing as a well-defined radiolucency.