The Management of an Extrafollicular Adenomatoid Odontogenic Tumour With Peripheral Involvement; A Case Report

ABSTRACT Background In 1971, the World Health Organisation concluded the term Adenomatoid Odontogenic Tumour (AOT). This tumour accounts for approximately 2%–7% of all odontogenic tumours. AOTs commonly present in the younger demographic with a 2:1 female predisposition. The maxilla is more commonly affected. AOTs are categorised into follicular, extrafollicular and peripheral variants, respectively. Patients are usually asymptomatic with evidence of expansion of the cortical bone. AOTs are slow‐growing and well‐encapsulated with enucleation and curettage being the treatment modality accepted amongst the literature. Methods A 15‐year‐old female was referred to the oral surgery department at Edinburgh Dental Institute with a 6–7‐month history of an asymptomatic swelling adjacent to tooth 22. On clinical assessment, there was a firm labial swelling adjacent to tooth 22. Radiographic assessment highlighted the presence of a unilocular radiolucency with a corticated margin distal to the root surface of tooth 22 with expansion, thinning and perforation of the buccal cortical bone. Diagnosis suggested a benign odontogenic lesion: an odontogenic keratocyst, lateral periodontal cyst or lateral radicular cyst. Results Management involved enucleation for histopathological assessment. This confirmed an intraosseous AOT with complete excision. Clinical and radiographic review highlighted complete mucosal healing with evidence of bony infiltration and no recurrence. Conclusion This case highlighted the effective management of an intraosseous AOT with enucleation and curettage.