Abstract
Nasopalatine duct cyst is the most common nonodontogenic cyst of the jaws. The cyst is believed to arise from rests of the nasopalatine duct epithelium. A 59-year-old white female patient was attended by the oral pathology service to evaluate painful swelling in the anterior palate. Intraoral examination showed an erythematous 1.5 × 1.5 cm nodule in the anterior edentulous palate. Occlusal and periapical radiographs showed a well-defined, unilocular, radiolucent image with a size of 1.5 × 1.5 cm, near to the midline of the anterior palate. Surgical excision was performed and the specimen revealed a fragment of cystic capsule lined with stratified squamous epithelium with areas of cuboid simple epithelium. The cystic capsule was composed by dense fibrous connective tissue, showing a chronic inflammatory infiltrate and large blood vessels. The diagnosis was nasopalatine duct cyst. The postoperative course was uneventful, and no signs of recurrence have been noted 7 months later. Support: FAPEMIG.
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