Salivary gland tumors are abnormal cells growing in the gland or in the tubes (ducts) that drain the salivary glands.
Tumor - salivary duct
The salivary glands are located around the mouth. They produce saliva, which moistens food to help with chewing and swallowing. Saliva also helps to protect teeth from decay.
There are 3 main pairs of salivary glands. The parotid glands are the largest. They are located in each cheek in front of the ears. Two submandibular glands are under the floor of the mouth under both sides of the jaw. Two sublingual glands are under the floor of the mouth. There are also hundreds of small salivary glands lining the rest of the mouth. These are called the minor salivary glands.
Salivary glands empty saliva into the mouth through ducts that open at various places in the mouth.
Salivary gland tumors are rare. Swelling of the salivary glands is mostly due to:
The most common type of salivary gland tumor is a slow-growing noncancerous (benign) tumor of the parotid gland. The tumor gradually increases the size of the gland. Some of these tumors can be cancerous (malignant).
Symptoms may include any of the following:
Surgery is most often done to remove the affected salivary gland. If the tumor is benign, no other treatment is needed.
Radiation therapy or extensive surgery may be needed if the tumor is cancerous. Chemotherapy may be used when the disease has spread beyond the salivary glands.
Most salivary gland tumors are noncancerous and slow growing. Removing the tumor with surgery often cures the condition. In rare cases, the tumor is cancerous and further treatment is needed.
Complications from the cancer or its treatment may include:
Call your provider if you have any of the following:
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Markiewicz MR, Fernandes RP, Ord RA. Salivary gland disease. In: Fonseca RJ, ed. Oral and Maxillofacial Surgery. 3rd ed. St Louis, MO: Elsevier; 2018:chap 20.
National Cancer Institute website. Salivary gland cancer treatment (adult) (PDQ) - health professional version. www.cancer.gov/types/head-and-neck/hp/adult/salivary-gland-treatment-pdq. Updated December 17, 2019. Accessed March 31, 2020.
Saade RE, Bell DM, Hanna EY. Benign neoplasms of the salivary glands. In: Flint PW, Haughey BH, Lund V, et al, eds. Cummings Otolaryngology: Head and Neck Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 86.