A clinico­statistical study of intraoral minor salivary gland tumors

Abstract

We statistically analyzed 42 minor salivary gland tumors retrieved from the file of the First Department of Oral and Maxillofacial Surgery at Osaka Dental University Hospital from April 2006 to March 2016. There were 28 benign and 14 malignant tumors. The most frequent tumor was the pleomorphic adenoma (57%) followed by mucoepidermoid carci­noma (17%) and adenoid cystic carcinoma (12%). The male­-female ratio for all of the tu­mors was 1 : 1.5. The average age of patients with all tumors was 55 years, with a range from 18 to 85 years. For all tumors, the most affected area was the palate (60%), followed by the upper lip (19%). For malignant tumors, the most frequent stage was II (50%), fol­lowed by stage I (36%). Operations were performed on 11 malignant tumors. Postopera­tive radiotherapy was done for one case where the excisional margin was positive for adenoid cystic carcinoma. The patient died in one case of basal cell adenocarcinoma which was confirmed for local recurrence, secondary cervical lymph node involvement, and remote metastasis to the lungs. These results suggest that radical surgery is needed for local control of malignant salivary gland tumors, and follow-­up should include the whole body. (J Osaka Dent Univ 2018; 52: 83-­88)