Mandible & maxilla
Other benign tumors / tumor-like conditions
Ameloblastic fibroma


Topic Completed: 1 January 2004

Minor changes: 9 November 2020

Copyright: 2004-2021, PathologyOutlines.com, Inc.

PubMed Search: Ameloblastic fibroma (mandible OR maxilla)


Nat Pernick, M.D.
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Cite this page: Pernick N. Ameloblastic fibroma. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/mandiblemaxillaameloblasticfibroma.html. Accessed April 19th, 2021.
Definition / general
  • Rare
  • Usually age 20 or less
  • Benign, rarely recurs
Radiology description
  • Variable radiolucent - radiopaque appearance
Treatment
  • Simple curettage
Gross description
  • Usually solid
Microscopic (histologic) description
  • Small islands and cords of markedly attenuated ameloblastic epithelium two cells thick within dense collagenous stroma that is often immature
  • Occasional dentin or cementum production and stellate reticulum
  • Also granular cell variant
Microscopic (histologic) images

Contributed by Kelly Magliocca, D.D.S., M.P.H.
Ameloblastic fibroma

Ameloblastic fibroma

Odontogenic islands with cystic change, within immature mesenchymal stroma


AF at scanning magnification

Odontogenic islands

Odontogenic cords within immature mesenchymal stroma

Differential diagnosis
  • Ameloblastoma: no connective tissue stroma, has dentin and enamel
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