[A 20-year retrospective histoclinical analysis of parotid gland tumors in the ENT Department AM in Katowice].

INTRODUCTION Salivary gland neoplasms represent the diverse group of tumours encountered by the head and neck surgeons. MATERIAL AND METHODS The study is analysis of 531 patients with parotid gland tumours in patients treated in ENT Department during 1986-2006. We analysed surgical treatment and intraoperative tumour stage. The results of histological diagnosis were presented. RESULTS The frequency of incidence of benign neoplasm was 80%. The most frequent tumour was pleomorphic adenoma--75% and adenolymphoma--16%. Malignant tumours constituted 20% of all gland tumours. Mucoepidermoid (27%) and adenoid cyst (22%) carcinomas were the most common malignant tumour. Tumour stages T3-T4 was in 90%.