Snapshot A 58-year-old woman presents to the physician with complaint of a painless lump on the left side of her face. She describes that she first noticed the lump more than 5 years ago, when it was small in size. However, it has progressively grown with time to the present size. Her husband notes that the patient's speech has changed slightly in the past year. Physical exam is notable for facial asymmetry and a firm, nontender mass on the left side of the face below the lower border of the mandible, as seen in the image. There was no palpable lymphadenopathy in her neck. Introduction Overview login to view 2 more bullets Epidemiology Incidence login to view 1 more bullet Demographics login to view 1 more bullet Risk factors login to view 1 more bullet ETIOLOGY Pathophysiology login to view 4 more bullets Presentation Symptoms login to view 6 more bullets Physical exam login to view 2 more bullets Imaging CT or MRI login to view 4 more bullets Ultrasound login to view 3 more bullets Studies Tissue sampling login to view 4 more bullets Differential Other tumors of the salivary and parotid glands (i.e., Warthin tumor, metastasis to the parotid gland, facial nerve schwannoma, mucoepidermoid, and adenoid cystic carcinoma) login to view 2 more bullets Treatment Surgical login to view 6 more bullets Complications Recurrence of tumor after surgical resection login to view 4 more bullets Malignant transformation login to view 7 more bullets Prognosis Excellent after surgical resection with adequate surgical margins