Ameloblastoma, desmoplastic type: a case report with characteristic radiological presentation

Ameloblastoma, desmoplastic type, is a rare lesion for which radiographic images are even less common, and such lesions are sometimes considered to be variant types. It is defined as a variant of ameloblastoma with specific imaging and histological features. This lesion occurs with the same frequency in the maxilla and mandible, although the predominant site is the anterior-premolar site in both the mandible and maxilla. For our case of ameloblastoma, desmoplastic type, resected from the right anterior to premolar maxilla, the radiographic appearance and histopathological findings were compared. Computed tomography images revealed that the lesion had a multilocular structure with many smaller septa at its periphery. Although expansion toward the maxillary sinus was suggested radiologically, invasion of the mucosa into the floor of the maxillary sinus was found on histopathological examination.