Abstract
Objective: The main purpose of this retrospective study was to survey SGTs, report their frequency and the prevalence, demographic features, and histological subtypes of MEC. Methods: These series retrieved from oral biopsy files of Tripoli Medical Centre (TMC) over a 14-year period. Results: One hundred ninety-seven tumours were found, 152 benign (77.8%) and 45tumours (22%) lesions, were malignant. Pleomorphic adenoma (PA), adenoid cystic carcinoma (ACC) and MEC were the most encountered benign and malignant tumours (129 cases, 66.8%), (23 cases, 11.6%) and (14 cases, 7.3%) respectively. Of the 45 malignant tumours, MEC (14 of 45), was the second most common neoplasm. Most MECs (7 of 14) were high-grade lesions. One central MEC occurred in the alveolar ridge of the mandible. Conclusions: Benign SGTs were much more frequent than malignant SGTs. MEC was the second commonest malignant variety. The parotid gland was the frequently affected site for MECs. High grade MEC constituted large group of different grades of this neoplasm.