Have you ever felt a lump inside your mouth, on your cheek, or on your neck? It's normal to feel a little scared when that happens, right? But not all lumps are dangerous cancers. However, sometimes these can be caused by a problem with our salivary glands, that is, the glands that produce saliva. Today, let's talk about this salivary gland cancer in detail, just like talking to a friend.
What is salivary gland cancer?
Simply put, salivary gland cancer is a cancer that develops in our salivary glands, the glands that produce saliva. You know, these salivary glands are located inside our mouths and throats. They produce saliva. It is this saliva that helps us start digesting the food we eat.
Now, there are two types of tumors that form in these salivary glands.
- Benign tumors: These are not cancerous, but sometimes they can cause problems.
- Malignant tumors: These are what we call cancer.
Both types of tumors can develop in any of our salivary glands.
How common is this cancer?
In fact, salivary gland cancer is very rare . It accounts for about 1% of all head and neck cancers. The two most common types are Mucoepidermoid Carcinoma and Adenoid Cystic Carcinoma. Together, these two types account for about half of all salivary gland cancers.
Who is more likely to develop salivary gland cancer?
This can happen to anyone. However, it has been found that men are slightly more likely to develop these cancerous tumors. In addition, you may be at increased risk for this condition for the following reasons:
- If you are over 55 years old.
- If you smoke or drink alcohol regularly, these are things that contribute to many diseases.
- If you have previously received radiation therapy to the head or neck.
- Some specific jobs , such as plumbers, rubber manufacturing companies, asbestos mines, or leather goods manufacturing, are said to be at slightly higher risk.
Some studies have shown that some rare types of salivary gland cancer are more common in people with certain viral infections, such as Epstein-Barr virus and Human Papillomavirus (HPV). However , this does not mean that these viruses cause the cancer . This link is still being researched.
What causes salivary gland cancer?
In fact, the exact cause of most salivary gland cancers is still unknown . These tumors can develop in any of the salivary glands in our mouth. However, they most commonly develop in the three major salivary glands. These are:
- Parotid glands: These are located inside our cheeks.
- Submandibular glands: These are located under the lower jaw bone.
- Sublingual glands: These are located under the tongue, along the floor of the mouth.
Most of the time, tumors, both cancerous and non-cancerous, start in the parotid glands.
These cancers can also develop in the minor salivary glands, which are tiny glands that are located in our mouth, tongue, inside our lips, inside our cheeks, inside our sinuses, inside our nose, and even in our larynx. Tumors in these small glands are very rare, but if they do develop, most of them are likely to be cancerous.
Importantly, if these cancers are left untreated, they can break off and spread (metastasize) to other parts of the body, either through the bloodstream or the lymphatic system. Once they do, they can be more difficult to treat. Salivary gland cancer can commonly spread to the lungs, bones, and liver.
What are the symptoms of salivary gland cancer?
Surprisingly, some people with salivary gland cancer do not experience any symptoms . However, the main symptom that is often seen is the development of a painless lump in a salivary gland.
However, if you have a malignant tumor, you may also experience other symptoms, such as:
- Feeling numbness or weakness in the face, neck, jaw, or mouth.
- Persistent pain in the face, neck, jaw, or mouth.
- Difficulty opening the mouth fully, or inability to move facial muscles properly.
- Difficulty swallowing.
- Bleeding from the mouth.
If you have something like this, you should definitely see a doctor.
How is salivary gland cancer diagnosed?
When you go to see a doctor, he or she will first examine you. He or she will ask about your medical history, whether anyone in your family has had cancer, etc. Then he or she will palpate the salivary glands and check for lumps. He or she will also test the function of the nerves in your face. He or she will also ask you about your symptoms.
After that, you may be asked to do a few more tests to confirm whether a tumor is present or not and whether it is cancerous. These are:
- CT scan: This uses X-rays to take pictures of the tumors in the salivary glands. It's like a 3D picture of the inside of the body. It can also show the size of the tumor and whether it has spread to other parts of the body, such as the lungs or bones.
- MRI (Magnetic Resonance Imaging): This uses a magnet and radio waves to make clear pictures of the inside of the body. Like a CT scan, this can also show the size of the tumor. MRI is especially good for seeing if the cancer has spread to soft tissues such as muscles, blood vessels, and nerves.
- `PET scan (Positron Emission Tomography): This involves injecting a small amount of radioactive material into the body to see if the cancer has spread to the lymph nodes or other parts of the body. Sometimes a `PET scan` and a `CT scan` can be done at the same time (`PET-CT`).
- Biopsy: This involves taking a small piece of tissue and a sample of fluid from the tumor in the salivary gland. A pathologist then examines the sample in a lab to see if there are any cancer cells. This sample can be taken using a fine-needle aspiration or a core needle biopsy.
Remember, the only way to definitively determine whether a salivary gland tumor is cancerous or not is with a biopsy.
How is the stage of this cancer determined?
After your cancer is diagnosed, your doctor will determine its stage, or `staging.` This can provide a lot of information about the cancer. It can also help decide what kind of treatment is needed.
The stage of tumors that develop in our major salivary glands (`Parotid`, `Submandibular`, `Sublingual`) is determined using a method called the `TLM system`:
- T (Tumor): The size and location of the tumor.
- L (Lymph nodes): Whether the cancer has spread to the lymph nodes.
- M (Metastasis): Whether the cancer has spread to other organs (metastasized).
However, the stage of cancers that develop in the minor salivary glands is determined in a different way.
It's important to understand the stage of your cancer. It can help you understand what treatments are available to you and what the outcome will be. So, be sure to ask your doctor about this.
What are the treatments for salivary gland cancer?
In most cases, surgery is the best treatment for tumors that can be safely removed. However, if the tumor is growing very quickly or has spread to other parts of the body, your doctor may recommend other treatments.
The treatment methods are as follows:
- Surgery: This is the main treatment for cancerous salivary gland tumors. In addition to removing the tumor, if there is a suspicion that the cancer has spread to the lymph nodes, those lymph nodes may also be removed (lymphadenectomy). After surgery, radiation therapy may be given to destroy any remaining cancer cells and stop the cancer from coming back.
- Radiation therapy: This involves using a machine to deliver radiation to the cancer cells and destroy them. Photon-beam radiation therapy and neutron beam radiation therapy are two types of radiation therapy used for salivary gland cancer. Sometimes, radiation therapy may be given as part of palliative care to reduce symptoms and improve quality of life.
- Chemotherapy: This uses drugs to kill cancer cells. If your cancer has spread beyond the salivary glands to other tissues beyond the head and neck, chemotherapy may be given.
Sometimes, your doctor may suggest that you take part in a clinical trial . These are studies to see how safe and effective new treatments are. New treatments include:
- Immunotherapy: This involves giving drugs to help your body's immune system recognize and fight cancer cells. Researchers are studying the role of a specific type of immunotherapy called checkpoint inhibitors in fighting advanced cancer.
- Targeted Therapy: This uses drugs to target defects in the genetic code of a cancer cell, either to kill the cancer or to stop it from growing. Research is also being conducted to see how effective these targeted therapies are in people with advanced adenoid cystic carcinomas.
- Radiosensitizers: These are a type of drug that makes cancer cells more sensitive to radiation. Research is also underway to see how these can be combined with radiation therapy to help treat salivary gland cancer.
Depending on the type of cancer you have, you may be given one or more treatments together to get rid of the cancer and prevent it from recurring.
What are the possible complications of non-cancerous (benign) salivary gland tumors?
Salivary gland tumors, although not cancerous, can become malignant over time. Symptoms of salivary gland cancer include a sudden, rapid enlargement of a previously existing tumor in or around the mouth, numbness, weakness, and facial pain. These symptoms may make it difficult for you to speak or swallow properly.
Can salivary gland cancer be prevented?
There is no way to completely prevent salivary gland cancer, but avoiding risk factors such as smoking and excessive alcohol consumption can reduce the risk of developing cancer in general.
Can salivary gland cancer be cured?
In most cases, if cancer is detected and treated early , it can be completely cured. Your chances of recovery depend on factors such as:
- The size of the tumor.
- Whether the cancer has spread.
- Whether the cancer has returned.
- Which salivary gland contains the cancer cells?
- How unusual cancer cells look under a microscope.
- Your overall health.
What is the survival rate for salivary gland cancer?
Cancer survival rates are research data that show how many people diagnosed with a particular cancer will survive a specific period of time, usually five years. In the case of salivary gland cancer, this rate varies depending on the type of cancer. For example, the five-year survival rate for a type called ``mucoepidermoid carcinoma'' is between 75% and 90%. The location of the tumor is also important. If it is limited to the salivary gland, the survival rate is about 94%. If the cancer has spread, that rate decreases.
It's important to remember that this data doesn't take into account things that are unique to you – things like your health status and how you respond to treatment.
Therefore, it is best to ask your doctor what your results will be based on your condition.
When should I see a doctor?
If you have any symptoms of a salivary gland tumor, especially if they last more than two weeks , be sure to see a doctor.
If you notice a lump in your mouth or throat that doesn't go away within a few weeks, be sure to see a doctor. Not all lumps are cancerous. They could be a cyst or a noncancerous salivary gland tumor. Only a doctor can tell for sure. Even if your lump is cancerous, the sooner you find it and start treatment, the better your chances of a good outcome.
Final Take-Home Message
So, I hope you now have a good understanding of the salivary gland cancer that we talked about today. Remember, if you have any unusual lumps, pain, or numbness in your mouth or throat, don't ignore it. See a doctor right away and get checked out. Not all lumps are cancer, but early detection is the best way to get the best results. Don't be afraid, the most important thing is to follow the correct medical advice. If you have any questions, talk to your doctor openly.
` Salivary Gland Cancer, Salivary Gland Cancer, Mouth Cancer, Oral Cancer, Neck Cancer, Cancer Symptoms, Cancer Treatment
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