A case of necrotizing sialometaplasia with bone resorption at the hard palate

Necrotizing sialometaplasia (NS) is a relatively uncommon benign disease of the salivary glands that most commonly occurs in the palate. It is often confused clinically and histopathologically with malignancies, such as squamous cell carcinoma or mucoepidermoid carcinoma. We report a rare case of NS with bone resorption at the hard palate.A 35-year-old woman was referred to our hospital complaining of swelling of the left hard palate. The lesion was 30 mm × 22 mm in diameter, with the ulceration. Magnetic resonance imaging showed a well-defined mass with bone resorption of the left hard palate. The patient underwent an incisional biopsy and histopathological diagnosis of NS was made. After 10 weeks, the lesion healed and no evidence of recurrence was noted.