Adenomatoid odontogenic tumor at an unusual site mimicking periapical cyst

Adenomatoid odontogenic tumor (AOT) since years has been a subject for diligent research by Oral Medicine and Radiologists and Oral Pathologists in the past. Adenomatoid odontogenic tumor is a benign hamartomatous slow growing neoplasm of epithelial origin composed of odontogenic epithelium in a variety of histoarchitectural patterns, embedded in a mature connective tissue stroma and characterized by slow but progressive growth. We present a case report on Adenomatoid odontogenic tumor mimicking pariapical cyst and at unusual site of posterior mandible with erupted teeth. This case of AOT introduces us to the unique variation in its presentation and the difficulty in differentiation from periapical disease of inflammatory origin.