Abstract
Adenomatoid odontogenic tumor（AOT）is an odontogenic tumor of the jaw, frequently in the anterior region（particularly the canine region）of females in their teens and 20s, causing painless swelling of the jaw. AOT is often accompanied by impacted teeth, and radiography depicts an ovoid, radiolucent area resembling a dentigerous cyst. Here we report a case of maxillary AOT in a 10-year-old girl. Her mother noticed right facial swelling, and the patient visited her local dental clinic in July 201X. Tumor was suspected, and she was referred to our department in August 201X. Extraoral examination showed diffuse swelling from the right ala nasi to the cheek region. Intraoral examination showed unerupted 12 and 13, with prolonged retention of 52 and 53. Gingival swelling and a parchment feeling to the bone were evident in this region. Panoramic X-ray showed a well-defined, unilocular, cyst-like radiolucent area in the right maxilla, with 12 within the lesion and 13 migrated toward the maxillary sinus. Computed tomography showed sandy calcifications within the lesion. The clinical diagnosis was suspected maxillary tumor. Biopsy under local anesthesia histopathologically diagnosed AOT, which was excised under general anesthesia in September 201X. No recurrence has been seen, and postoperative progress has been satisfactory.
