Maxillary dentigerous cyst showing squamous odontogenic tumor-like proliferation: surgical approach and literature review

• Autor(a) principal: Barbeiro, Camila De Oliveira [UNESP]
• Data de Publicação: 2021
• Outros Autores: Barbeiro, Roberto Henrique [UNESP], Silveira, Heitor Albergoni Da [UNESP], Almeida, Luciana Yamamoto De [UNESP], León, Jorge Esquiche, Bufalino, Andreia [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.4322/acr.2021.302; http://hdl.handle.net/11449/213391
• topic: Squamous odontogenic tumor; odontogenic cysts; dentigerous cyst; histology

Squamous odontogenic tumor (SOT) is a rare benign neoplasm of the jaw that likely arises from remnants of the dental lamina. It is a slow-growing lesion, with a radiolucent appearance in the central variant. Microscopically, SOT shows islands of squamous epithelium supported by fibrous stroma. In rare cases, squamous odontogenic tumor-like proliferation (SOT-LP) can be observed arising from odontogenic cysts (SOT-LPOC). Herein, we describe the case of a 42-year-old man who presented with discreet bleeding in the maxillary gingiva. Imaging revealed a well-defined, ovoid-shaped lesion with sclerotic margins involving tooth #18 in the intraosseous location. Fine needle aspiration supported the cystic nature of the lesion. After surgery, microscopy revealed a dentigerous cyst showing SOT-LP features. There was no recurrence after a 3-year follow-up. To the best of our knowledge, this is the first report of a dentigerous cyst showing SOT-LP features in the maxilla. Such cysts should be identified to avoid misdiagnosis, with the finding having therapeutic and prognostic implications.