Understanding Benign and Malignant Salivary Gland Tumors
A salivary gland tumor is an abnormal growth that develops in the salivary glands. These glands produce saliva, which helps with chewing, swallowing, and digestion. Salivary gland tumors can be non-cancerous (benign) or cancerous (malignant). Many tumors occur in the parotid gland, which is the largest salivary gland located near the ear and jaw area.
Most salivary gland tumors are benign, but some may become cancerous over time. Early diagnosis and treatment are important to avoid complications and protect nearby nerves and tissues.
What Is a Parotid Gland Tumor?
A parotid gland tumor develops in the parotid gland, located in front of the ear and extending to the angle of the jaw. The parotid gland develops early during embryo growth and becomes closely connected with facial nerves and lymph nodes.
Because of this location, tumors in the parotid gland may affect facial movement if they grow large or become aggressive. The facial nerve passes directly through the gland, making treatment more delicate.
Around 85% of parotid tumors are benign, while about 15% are malignant.
What Are the Common Types of Benign Salivary Gland Tumors?
There are several kinds of benign tumors found in the salivary glands.
Pleomorphic Adenoma
The most common benign tumor is the pleomorphic adenoma or mixed tumor. These tumors usually grow slowly and have clear borders. Although they are non-cancerous, they can continue growing and become harder to remove.
In some cases, a pleomorphic adenoma can change into cancer over time. This condition is called carcinoma ex-pleomorphic adenoma.
Warthin’s Tumor
Another common benign tumor is Warthin’s tumor. It often appears in older adults and may develop on both sides of the face. Surgical removal is usually successful, and recurrence is uncommon.
Other Benign Tumors
Other benign salivary gland tumors include:
- Oncocytomas
- Monomorphic tumors
- Hemangiomas
- Benign lymphoepithelial lesions
Hemangiomas are common in children and are made of blood vessels. Benign lymphoepithelial lesions are sometimes linked with HIV-positive patients and may cause repeated cysts.
What Are the Symptoms of a Salivary Gland Tumor?
Symptoms may vary depending on the size and type of tumor. Common signs include:
- A lump near the jaw, ear, or neck
- Swelling in the face
- Pain around the salivary gland
- Difficulty swallowing
- Numbness or weakness in the face
- Trouble opening the mouth fully
Some tumors grow slowly and may not cause pain in the beginning. A fast-growing lump or facial weakness may suggest a malignant tumor.
What Causes Salivary Gland Cancer and Tumors?
The exact cause of most salivary gland tumors is not fully known. However, several factors may increase the risk:
- Older age
- Radiation exposure
- Smoking
- Family history
- Exposure to harmful chemicals
- Viral infections
Smoking is strongly linked with Warthin’s tumor. Some genetic changes may also play a role in tumor growth.
How Is a Parotid Tumor Diagnosis Done?
Doctors use different tests to diagnose a salivary gland tumor.
Physical Examination
The doctor checks for swelling, pain, or facial weakness.
Imaging Tests
CT scans and MRI scans help show the size and location of the tumor.
Fine Needle Aspiration Biopsy
A thin needle is used to collect cells from the tumor. This helps identify whether the tumor is benign or malignant.
Ultrasound
Ultrasound imaging may also help examine smaller tumors and cysts.
What Is the Best Salivary Gland Tumor Treatment?
Treatment depends on the tumor type, size, and whether it is cancerous.
Surgery for Salivary Gland Tumors
Surgery is the main treatment for most tumors. A procedure called parotidectomy surgery removes part or all of the parotid gland while protecting the facial nerve.
Benign tumors are usually cured with complete removal.
Radiation Therapy
Radiation may be used after surgery for malignant tumors or when cancer spreads to nearby tissues.
Facial Nerve Protection
Because the facial nerve passes through the parotid gland, surgeons carefully protect it during treatment to reduce the risk of facial weakness.
Can a Benign Parotid Tumor Become Cancerous?
Yes, some benign tumors can become malignant if left untreated for many years. Pleomorphic adenoma has a small but important risk of turning into cancer.
This is why doctors often recommend surgical removal even when the tumor is benign.
What Is Recovery Like After Parotidectomy Surgery?
Recovery after surgery depends on the tumor size and the extent of removal. Many patients recover well within a few weeks.
Temporary swelling, numbness, or mild facial weakness may happen after surgery. Most people can return to normal activities after proper healing.
Regular follow-up visits are important to monitor for recurrence.
Why Is Early Detection of Salivary Gland Tumor Symptoms Important?
Early diagnosis helps prevent complications and improves treatment success. Small tumors are easier to remove and less likely to damage nearby nerves.
Anyone who notices a lump near the jaw, ear, or neck should seek medical evaluation as soon as possible.
Treatment Support at Alpha Surgical Group
For patients seeking evaluation and treatment for salivary gland tumors, parotid gland tumors, and parotidectomy surgery, treatment services are available at Alpha Surgical Group.
Address:
9735 Wilshire Boulevard, Beverly Hills, CA 90211, USA


