Adenomatoid odontogenic tumor - Highlights

Adenomatoid odontogenic tumor (AOT) is a benign tumor of odontogenic origin thought to arise from the remnants of dental lamina.

📝Here are some "Highlights" or a high level overview of Adenomatoid odontogenic tumor

• It is reported that 74% of the AOT cases occur in the anterior jaws and are associated with an unerupted tooth. 

• It is also reported that 2/3rds of affected teeth in AOT cases are canines (maxillary or mandibular). However it is known to be more commonly associated with the maxillary canine than its mandibular counterpart. 

• AOT is called “two-thirds tumor”. 

• AOTs usually appear as a pericoronal radiolucency around the crown of an unerupted tooth (follicular type).

• In radiographs, follicular type AOT mimics dentigerous cyst, but the radiolucency usually extends a little bit further onto the root of the unerupted tooth (unlike dentigerous cyst in which radiolucency extends upto CEJ).

• Two-thirds of the radiolucencies, both follicular and extra-follicular types may have radiopaque flecks of calcified tissue.

• Histologically, characteristic duct-like and rosette like structures are present in the midst of the tumor cells.

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