Cancer of the parotid gland
Parotid gland cancer is an uncommon disease, but of great importance in the oncologic field. This neoplasm represents approximately 3-5% of all head and neck tumors.
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The parotid gland (the largest of the salivary glands) plays a crucial role in saliva production and overall oral health. Detecting and treating this type of cancer early can make a significant difference in a patient's life. At Panama Cancer Clinic, we make sure that every patient has access to the best treatments and support throughout the entire process.
Parotid gland cancer most often affects older people, with an average age at diagnosis of 60 years.
Although most parotid gland tumors are benign, about 20-30% may be malignant.
Diagnosis and Staging
An accurate diagnosis makes it possible to identify the type of cancer, its exact location and whether it has spread to other parts of the body. Staging, on the other hand, determines the extent of the cancer, which is essential for planning appropriate treatment.
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What is parotid gland cancer?
Parotid gland cancer is a type of malignant tumor that develops in the parotid gland; the largest of the salivary glands, located at the back of each cheek, just in front of the ears. This type of cancer is rare and can manifest itself in various forms, depending on the type of cells involved.
Types of parotid gland cancer
The main types of parotid gland cancer are:
Mucoepidermoid carcinoma:
It is the most common type of parotid gland cancer and originates in the mucus-producing cells; and also in the epidermal cells.
Adenocarcinoma:
It arises in glandular cells and has several subcategories, each with different characteristics and behaviors.
Adenoid cystic carcinoma:
It often grows slowly, but can be aggressive and has a tendency to spread to nearby nerves.
Acinar cell carcinoma:
It affects the cells that produce digestive enzymes and usually has a more favorable prognosis.
Squamous cell carcinoma:
It develops in the flat, thin cells that line the salivary glands, and its tendency is more aggressive.
Symptoms of parotid gland cancer
Symptoms commonly associated with parotid gland cancer are:
Swelling or mass in the area of the parotid gland.
Pain in the affected area.
Numbness or weakness on one side of the face.
Difficulty in swallowing.
Changes in facial symmetry.
Persistent ear pain.
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Risk Factors
Risk factors for parotid gland cancer include:
Radiation exposure to the head and neck.
Advanced age.
Smoking.
Viral infections such as, for example: Epstein-Barr virus.
Family history of salivary gland cancer.
Screening tests
The diagnosis of parotid gland cancer includes the following tests:
Physical Examination:
Initial evaluation of any mass or symptom.
CT or MR imaging:
They help to visualize the extent of the tumor.
Biopsy:
Extraction of a tissue sample for histological analysis.
Ultrasound:
Frequently used to guide biopsies and evaluate the tumor.
Treatment for cancer of the parotid gland
Treatment of parotid gland cancer can involve multiple therapeutic approaches, from surgery to radiation therapy to chemotherapy.
Surgery
Surgical resection of the tumor is the most common treatment. The goal of surgery is to remove the tumor and any surrounding affected tissue. Depending on the location and size of the tumor, the surgeon may perform a partial or total parotidectomy.
Radiotherapy
In the case of parotid gland cancer, radiation therapy is often used after surgery to eliminate any residual cancer cells and reduce the risk of recurrence.
Chemotherapy
For parotid gland cancer, chemotherapy can be used in advanced or recurrent cases, or as part of a combined treatment approach.
Targeted Therapy
Targeted therapy is a newer treatment that uses drugs specifically designed to attack cancer cells without severely damaging healthy cells.
Immunotherapy
Immunotherapy is an innovative approach to cancer treatment that boosts the body's own immune system to fight cancer cells. The drugs used in immunotherapy can be administered intravenously or as injections.
Prevention
Although it is not possible to completely eradicate the risk of this type of cancer, there are certain measures that can reduce its probabilities. Among them, we can mention:
Avoid smoking.
Limit radiation exposure to the head and neck.
Maintain good oral hygiene.
Perform regular medical check-ups to detect any abnormalities early.
