Ameloblastomas are benign but aggressive odontogenic tumors that most commonly affect the posterior mandible. Approxi- mately 15% occur in the maxilla, with a subset thought to originate from the epithelial lining of the sinonasal cavities. Histologically, sinonasal ameloblastomas are identical to those of the oral cavity, with classical features of palisaded colum- nar basilar cells surrounding a central proliferation that resembles the stellate reticulum of a developing tooth. Unlike the gnathic variant, sinonasal ameloblastomas tend to affect males more than females, and the incidence of diagnosis peaks at a later age, approximately 60 years old. The overall prognosis is favorable, with local recurrence being the most common long-term sequalae. Keywords Sinonasal ameloblastoma · Gnathic · Odontogenic neoplasm · Maxilla Case Description local anesthesia and the patient was placed on amoxicillin/ clavulanate acid. A CT scan was ordered. A 34 year-old male presented to a general dental clinic complaining of pain and swelling in his left upper jaw for a reported duration of 2–3 weeks. His medical history was Radiographic Features non-contributory. The physical examination revealed cel- lulitis of the left upper face and a firm mass that crossed The CT scan revealed a large, well-demarcated, heterogene- the midline intraorally. Additionally, the patient had
Head and Neck Pathology – Springer Journals
Published: May 30, 2018
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