376 - Unicystic Ameloblastoma: Two Case Reports of Healthy Children Presenting to Children's Wisconsin

Introduction: Ameloblastoma is the most common odontogenic tumor and is typically slow growing, locally invasive, and primarily benign. Ameloblastomas arise from odontogenic epithelial origin and can be characterized into three different categories: conventional solid/multicystic, unicystic, or peripheral. This case report focuses on unicystic ameloblastomas. This type of ameloblastoma is seen in younger patients, half of which are diagnosed during the second decade of life. The majority of lesions are found in the posterior mandible and are often asymptomatic. These lesions are usually treated by enucleation, though local resection is sometimes indicated. Long term follow up is important to monitor for possible recurrence. Recurrence rates for unicystic ameloblastomas range between 10-20% after enucleation and curettage, which is less than conventional solid/multicystic ameloblastomas.

Case Report: This case report examines two patients with unicystic ameloblastomas. The first patient is a healthy 8 year old male presenting with expansion in the anterior mandible and a large expansive lesion causing displacement of multiple teeth. The second patient is a healthy 13 year old female presenting with expansion of the left posterior mandible and a large expansive lesion causing resorption of the roots of the surrounding teeth. This report will include clinical and histological findings for two cases of unicystic ameloblastoma and the treatment rendered for each patient.