A 43-year-old woman presents with pain in the right side of her neck. A mass is found on physical examination.
Correct Answer: C. Acinic cell carcinoma
Acinic cell carcinoma is considered a low-grade malignant neoplasm that appears to be more common in the fourth or fifth decades of life. They are most common in the parotid gland. This tumor can also occur in children. Several histological growth patterns have been described that are associated with this neoplasm. Complete surgical resection is the treatment of choice in tumors that are more circumscribed; however, the tumor may show an infiltrative pattern. Prognosis is determined by clinical stage. Recurrences and metastasis may occur, usually within a period of 5 years.