Ameloblastoma

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[edit] Discussion of Ameloblastoma

  • Ameloblastomas are benign epithelial neoplasms
  • Represent about 10% of odontogenic tumors.
  • Exhibit locally aggressive behavior.
  • Typically manifest in the 3rd to 5th decades of life.
  • Patients usually present with a slow-growing, painless mass.
  • Most ameloblastomas occur in the ramus and posterior body of the mandible (80% of cases).


  • Treatment of ameloblastoma depends on the extent of tumor infiltration through the cyst wall and into surrounding bone.
    • Excision of a relatively contained ameloblastoma could involve localized removal of the lesion with wide margins
    • If the lesion is highly infiltrative and extensive, en bloc resection would be performed.


[edit] Imaging Findings for Ameloblastoma

  • Ameloblastomas can vary in their radiographic appearance.
  • Some appear as well-defined, unilocular, well-corticated, lucent lesions that are often associated with the crowns of impacted or unerupted teeth; as a result, such ameloblastomas are indistinguishable from odontogenic keratocysts and dentigerous cysts at radiography.
  • Other ameloblastomas are multilocular with internal septa and a honeycomb or soap bubble appearance and are often similar in appearance to large odontogenic keratocysts.
  • Ameloblastomas are typically expansile with an osseous shell that represents the involved bone.
  • CT findings include cystic areas of low attenuation with isoattenuating solid regions.

[edit] Images

Patient #1

[edit] See Also

[edit] External Links

Goldminer: Ameloblastoma

[edit] References for Ameloblastoma