Squamous odontogenic tumor: A case report and review of literature

Department of Oral and Maxillofacial Pathology, Dr. Syamala Reddy Dental College, Hospital and Research Centre, Bangalore, India.
Journal of Oral and Maxillofacial Pathology 04/2012; 16(1):113-7. DOI: 10.4103/0973-029X.92986
Source: PubMed

ABSTRACT The squamous odontogenic tumor (SOT) is a rare, benign, locally infiltrative neoplasm of the jaws that appears to originate from the rests of Malassez, gingival surface epithelium or from remnants of the dental lamina. SOT was first described by Pullon et al. (1975). Since then there has been paucity in the number of reported cases, especially in the Indian subcontinent. The tumor is often asymptomatic, although it can present with symptoms of pain and tooth mobility. The characteristic radiographic appearance is that of a triangular-shaped unilocular radiolucency associated with the roots of erupted, vital teeth and has a predilection for the anterior maxilla and the posterior mandible. Histologically, the tumor is characterized by the formation of variably sized nests and cords of uniform, benign-appearing, squamous epithelium with occasional vacuolization and keratinization. We report a case of SOT occurring in a 58-year-old male in the anterior mandible with unusual localization and appearance.

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    ABSTRACT: Squamous odontogenic tumors are rare neoplasms of the jaw that are benign and locally infiltrative. The tumor originates in the gingival rests of Malassez, remnants of dental lamina or gingival surface epithelium. This type of tumor was first described by Pullon et al. (Oral Surg Oral Med Oral Pathol 40:616-630, 1975). The clinical presentation is mostly asymptomatic, though pain and tooth mobility may also occur. Radiographically, the tumor presents as a triangular radiolucent lesion found mostly in the maxilla and present between the roots of the teeth. Histologically, it may appear similar to acanthomatous and desmoplastic ameloblastoma; hence, it can present problems in differential diagnosis. Here, we describe a case of squamous odontogenic tumor of the anterior maxilla in a middle-aged Indian man.
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