[Epidemiological evaluation of salivary gland tumors in the Wrocław ENT Department patients in the years 2001-2010]

Abstract

Salivary gland tumors represents approximately 3% of all head and neck neoplasms. Most of them are benign and located in the parotid gland.

Aim: Epidemologic analysis of salivary gland neoplasms in the Wrocław ENT Department.

Material and methods: 304 patients (170 women, 134 men) with histologically confirmed salivary gland tumors treated in the years 2001-2010 were reviewed retrospectively.

Results: Benign tumors were diagnosed in 83.9% of patients, malignant lesions constituted 16.1% of cases. The average age of patients were 55 years. Pleomorphic adenoma and Warthin's tumor constituted the most common benign tumor (93.3%). Among malignant tumors--adenoid cystic carcinoma (24.5%) and adenocarcinoma (22.5%) were the most frequent. Neoplasms located in submandibular gland and in minor salivary gland in the vast majority of cases were malignat: 35.1% and 38.9%, respectively. Parotid gland tumors were malignant in 11.7%. An increase of salivary gland neoplasms total number, predominantly in men, and in malignant neoplasms percentage: from 13.8% in the years 2001-2005 to 17.7% in the years 2006-2010, was noted.

Conclusions: Most of salivary gland neoplasms are benign. Pleomorphic adenoma and Warthin's tumor (93.3%) constituted the most common benign tumors, adenoid cystic carcinoma (24.5%) and adenocarcinoma (22.5%) were the most frequent malignant tumors. Malignant tumor patients were avereage 12.5 years older than benign tumors persons. More than 1/3 of submandibular gland and minor salivary glands neoplasms were malignant. An increase of malignant lesions was noted--from 13.8% to 17.7% of the total number of salivary gland neoplasms.