Necrotizing sialometaplasia: review of 127 cases

A review of 127 documented cases of necrotizing sialometaplasia is presented, mainly focusing on 96 palatal lesions. Necrotizing sialometaplasia is a benign, self limiting inflammatory lesion of the minor salivary glands. The cause is unknown but it may be related to oral trauma, tobacco use or inadequate blood supply. Male (mean age 49.8 yrs) to female (mean age: 36.3 yrs) ratio is 2.31:1. Because the clinical and histologic features mimic malignancy, proper diagnosis is of utmost importance in order to avoid unnecessary and extensive surgery and radiation therapy. The lesion heals spontaneously, regardless of therapy in two to eight weeks.