Adenomatoid Odontogenic Tumor: A Dentigerous Cyst Mimic in Maxilla

The adenomatoid odontogenic tumor is a rare and distinct neoplasm which is considered a slowly progressive, benign, non-neoplastic hamartomatous lesion by many. It is notoriously misdiagnosed as a dentigerous cyst. It accounts for 1-9% of odontogenic tumors. The most common site of occurrence is maxilla and it is usually associated with an unerupted, permanent tooth. It is most commonly seen in young women patients. It closely resembles ameloblastoma or dentigerous cyst. A rare case of adenomatoid tumor of maxilla mimicking a dentigerous cyst is presented here.