Adenomatoid odontogenic tumor

Adenomatoid odontogenic tumor

1. ADENOMATOID ODONTOGENIC TUMOR -DR. LANA MICHAEL

2. Also Known As Adenoameloblastoma Ameloblastic Adenomatoid Tumor

3. Introduction Considered To Be An Uncommon Tumor Occurs Mostly In Association With An Unerupted Maxillary Cuspid. It Is A Benign (Hamartomatous),non Invasive Lesion With Slow But Progressive Growth.

4. Clinical features Age : mean Age Of These Pts Was Approximately 18yrs,with A Range Of 5-53yrs Sex Predilection : marked Predilection For Occurrence Of The Tumor In Females Than In Males. Site Of Occurrence : greater In Maxilla Than In Mandible, occurs More Frequently In The Anterior Part Of The Jaws With 76% Developing Anterior To The Cuspidin The Maxilla And Mandible. Size:1.5-3.0cm

5. Radiographic features On Radiographs It Usually Appears As A Well Defined Radiolucency but Some Cases Calcification Within The Tumor May Produce faint Radiopacities The Lesion Is Often Associated With An Unerupted Tooth And May Stimulate A Dentigerous Cyst.

6. Histologic features Macroscopic Features : central Aot’s Macroscopically Appears As A Soft, roughly Spherical Mass With A Distinct Fibrous Capsule. Microscopic Features : the Most Distinctive Microscopic Feature Of Aot Is Varying Numbers Of Duct Like Structures With Lumina Of Varying Size That Are Lined By A Single Layer Of Cuboidal To Columnar Epithelial Cells That Have Nuclei That Frequently Are Polarized Away From The Lumen. These Duct Like Or Microcyst Lumina Frequently Are Lined By An Eosinophilic Rim Of Varying Thickness ( Hyaline Ring ).

7. The Stellate Reticulum Like Spindle Cells, and Occasionally Round Or Polygonal Epithelial Cells Dominate The Tissue Between The Cell Rich Nodules. Small Amounts Of Eosinophilic Material Or Calcifications Also May Be Present Between These Cells.

8. treatment The majority of tumors of this variety have been treated by conservative surgical excision

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