Barbeiro Camila de Oliveira, Barbeiro Roberto Henrique, da Silveira Heitor Albergoni, de Almeida Luciana Yamamoto, León Jorge Esquiche, Bufalino Andreia
Universidade Estadual Paulista (UNESP), Faculdade de Odontologia, Medicina Oral, Departamento de Diagnóstico e Cirurgia, Araraquara, SP, Brasil.
Universidade de São Paulo (USP), Faculdade de Odontologia de Ribeirão Preto, Patologia Oral, Departamento de Estomatologia, Saúde Coletiva e Odontologia Legal, Ribeirão Preto, SP, Brasil.
Autops Case Rep. 2021 Jul 2;11:e2021302. doi: 10.4322/acr.2021.302. eCollection 2021.
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.
鳞状牙源性肿瘤（SOT）是一种罕见的颌骨良性肿瘤，可能起源于牙板残余。它是一种生长缓慢的病变，中央型表现为透射影像。显微镜下，SOT表现为纤维性基质支持的鳞状上皮岛。在罕见情况下，可观察到牙源性囊肿（SOT-LPOC）出现鳞状牙源性肿瘤样增生（SOT-LP）。在此，我们描述了一名42岁男性患者，其表现为上颌牙龈少量出血。影像学检查发现一个边界清晰、椭圆形的病变，骨内病变累及18号牙，边缘硬化。细针穿刺证实病变为囊性。手术后，显微镜检查发现含牙囊肿具有SOT-LP特征。3年随访后无复发。据我们所知，这是上颌骨含牙囊肿具有SOT-LP特征的首例报告。应识别此类囊肿以避免误诊，这一发现具有治疗和预后意义。
