Abstract
The causes of cystic parotid lesions may be congenital or acquired and may cause bilateral or unilateral cysts. Bilateral cystic lesions include Warthin's tumor, benign lymphepithelial lesions of human immunodeficiency virus, Sjorgrin's syndrome, and sialocele. Unilateral cystic lesions include Warthin's tumor, sialocele, first-branchial cleft cyst, parotid lymphoepithelial cyst, parotid lymphangioma, necrotic and infected lymph node. This chapter describes in more detail the etiology, clinical presentation, evaluation, and treatment of “sialocele” and “dermoid cyst of the parotid gland.” It also summarizes parotid gland tumors based on the World Health Organization histological classification, which categorizes parotid tumors into benign epithelial tumors (most commonly pleomorphic adenoma), soft tissue tumors (hemangioma), hematolymphoid tumors (lymphoma), and secondary tumors (represent less than 2% of all head and neck neoplasms).