Maxillary dentigerous cyst showing squamous odontogenic tumor-like proliferation: surgical approach and literature review
Barbeiro, Camila De Oliveira [UNESP]
Barbeiro, Roberto Henrique [UNESP]
Silveira, Heitor Albergoni Da [UNESP]
Almeida, Luciana Yamamoto De [UNESP]
León, Jorge Esquiche
Bufalino, Andreia [UNESP]
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Hospital Universitário da Universidade de São Paulo
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.
Squamous odontogenic tumor, odontogenic cysts, dentigerous cyst, histology
Autopsy and Case Reports. Hospital Universitário da Universidade de São Paulo, v. 11, p. -, 2021.