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Case Reports in Pathology
Volume 2012, Article ID 218156, 5 pages
Case Report

Ameloblastoma of the Sinonasal Tract: Report of a Case with Clinicopathologic Considerations

1Pathology Unit, Cannizzaro Hospital, Via Messina 829, 95126 Catania, Italy
2Umberto I Hospital, Via Trieste 24, 94100 Enna, Italy
3Cervicofacial Surgery Unit, Cannizzaro Hospital, Via Messina 829, 95126 Catania, Italy

Received 17 October 2012; Accepted 15 November 2012

Academic Editors: T. Batinac, I. A. Chaudhry, and D. Tsuruta

Copyright © 2012 Maria Grazia Tranchina et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Ameloblastomas are locally aggressive jaw tumours with a high propensity for recurrence and are believed to arise from remnants of dental lamina or odontogenic epithelium. Extragnathic ameloblastomas are unusual, and primary sinonasal tract origin is very uncommon with few cases reported in the literature. We herein report a case of primary sinonasal ameloblastoma presented in a 74-year-old male with nasal obstruction, rhinorrhoea, and sinusitis. Nasal endoscopy showed the right nasal cavity completely obstructed by a polypoid lesion attached to the lateral nasal wall. A preoperative CT scan was performed showing a solid lesion, measuring 2 cm in the maximum diameter, extending from the nasopharynx area with obstruction of the ostiomeatal unit and sphenoethmoidal recess into the lateral pharyngeal space, laterally to the parotid, without continuity with maxillary alveola and antrum. The tumour was completely excised endoscopically, and a final diagnosis of ameloblastoma was rendered. At the 12-month followup, there was no evidence of recurrence.