Abstract
We report a case of peripheral squamous odontogenic tumor, which is a rare benign odontogenic tumor. The patient was a 30-year-old man who presented with a painless swelling in the gingiva of the anterior teeth of the mandible. The mass was hemispherical and dark brown. No abnormality was found in the surrounding tissue. There were no findings on dental radiographs or computed tomographic scans.Under local anesthesia, the mass, including the periosteum, was enucleated. The underlying bone had not been resorbed. The removed specimen measured 10×8×4mm and was elastic hard.Histologically, the specimen was composed of numerous nests of well-differentiated squamous epithelium in fibrous connective tissue. Each of the epithelial nests had a peripheral layer of cuboidal or squamous cells. There was occasional microcystic generation and calcification. No dysplasia was present. Based on these findings, the lesion was diagnosed as a peripheral squamous odontogenic tumor. Healing was uneventful, and there has been no evidence of recurrence as of 1 year postoperatively.
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