[Benign tumors of the parotid gland].

Abstract

Benign tumors of the salivary glands are varied and named after their cell type. They occur most commonly in the parotid gland, and the majority (approximately 80%) are pleomorphic adenoma. This benign tumor arises from the superficial lobe of the gland in approximately 80% of cases. Less commonly, the mass presents as a cheek mass overlying the masseter muscle, arising from the accessory parotid lobe. If the tumor arises from the deep lobe, it presents as a para-pharyngeal mass with a completely different clinical presentation. In this instance, the patient will complain of snoring and difficultly in swallowing. Physical examination will reveal a soft palate and tonsillar, diffuse bulge, which is firm in consistency. Malignant transformation is extremely rare. Ultrasonography, computed tomography scan and magnetic resonance imaging are the best imaging tools. Treatment is usually through superficial or total conservative parotidectomy, with preservation of the facial nerve.