A rare case report of an adenomatoid odontogenic tumor associated with odontoma in the maxilla

Agnes Assao; Diogo Loureiro de Freitas; Denise Tostes Oliveira

doi:10.1016/j.ijscr.2017.08.020

A rare case report of an adenomatoid odontogenic tumor associated with odontoma in the maxilla

Int J Surg Case Rep. 2017:39:245-249. doi: 10.1016/j.ijscr.2017.08.020. Epub 2017 Aug 24.

Authors

Agnes Assao¹, Diogo Loureiro de Freitas², Denise Tostes Oliveira³

Affiliations

¹ Department of Surgery, Stomatology, Pathology and Radiology, Area of Pathology, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo 17012-901, Brazil. Electronic address: agnesassao@usp.br.
² Department of Oral and Maxillofacial Surgery of the University of Biomedical Sciences of Cacoal, Avenida Cuiabá, 3087, Cacoal, Rondônia 76963-665, Brazil. Electronic address: cirurgia_entalhe@hotmail.com.
³ Department of Surgery, Stomatology, Pathology and Radiology, Area of Pathology, Bauru School of Dentistry, University of São Paulo, Alameda Octávio Pinheiro Brisolla, 9-75, Bauru, São Paulo 17012-901, Brazil. Electronic address: denisetostes@usp.br.

Abstract

Introduction: The adenomatoid odontogenic tumor (AOT) associated with odontoma has been described as a new entity with overlapping features of adenomatoid-like structures and odontoma. Presentation of the case: We report the second case of AOT associated with odontoma in the posterior maxillary region. A 22-year-old patient presented expansion of the vestibular and palatine cortical wall of maxilla. Radiographic examination and computed tomography confirmed erosion of maxillary walls, root resorption, displacement of a neighboring tooth and radiopacities within the lesion. Histopathological analysis showed a cystic cavity lined by odontogenic epithelium, organized as duct like structures and tubular dentin. The diagnosis established was AOT associated with odontoma.

Discussion: As fewer cases have been described, the aim of this study is to report clinical behavior and evolution of adenomatoid odontogenic tumor associated with odontoma, as it have not yet been described and its origin is not completely established. The hamartomatous or neoplastic origin of this tumor is under debate.

Conclusions: Therefore, it is necessary similar cases to be published to increase the knowledge about the clinical behavior and evolution of this tumor, to enable such lesions to be more clearly defined in the next classification of odontogenic tumors.

Keywords: Adenomatoid odontogenic tumor; Case report; Odontogenic tumor; Odontoma.