Frequently Asked Questions About Lung Cancer
Cancer. A single word that can turn a person's world inside out. The Internet makes getting information about cancer easier than ever. But unverifiable information is abundant in cyberspace. It's important for patients to obtain knowledge, not just information. For free accurate, up-to-date, cancer-related explanations from an oncology nurse or for physician referral information, please call The James Line at: (614) 293-5066 or toll-free at 1-800-293-5066.
Following are some of the most frequently asked questions by patients about lung cancer.
Q. My doctor says there are two types of lung cancer. What are they?
A. Lung cancers can be divided into two types: small cell lung cancer and non-small cell lung cancer. The cancer cells of each type grow and spread in different ways, and they are treated differently.
Non-Small Cell Lung Cancer: Most lung cancers are non-small cell. There are three types of non-small cell lung cancer: squamous cell carcinoma, adenocarcinoma and large cell carcinoma.
Small Cell Lung Cancer: About one fourth of the newly diagnosed lung cancer cases are small cell carcinomas – a type of lung cancer in which the cells are small and round. It is also sometimes called "oat cell" lung cancer. This type of cancer grows rapidly and quickly spreads to other organs.
Q. How do I prevent getting lung cancer?
A. Prevention tips:
- Quit smoking or, better yet, never start.
- If you do smoke, quitting early in life is best, but it is never too late to kick the habit and reduce your risk.
- Follow safety rules and procedures to reduce exposure to carcinogens in the workplace.
Q. What are the risk factors for developing lung cancer?
A. By far, smoking tobacco causes most lung cancers. Tobacco smoke has many carcinogens - substances that damage cells. The risk of lung cancer begins to slowly decrease as soon as a person quits smoking.
Although smoking is without question the major cause of lung cancer, there are some other causes as well. Passive smoking is one. Exposure to other carcinogens, such as asbestos, is another. Tuberculosis (TB) can increase the risk. Exposure to high levels of radon may also increase the risk – especially for smokers. (Radon is a colorless, odorless gas that is emitted by decaying uranium in rocks and soil.) Recent studies have shown that genetic factors may also have a role in determining lung cancer risk.
Q. How can lung cancer be detected?
A. Early detection of lung cancer is difficult. When it first develops, lung cancer usually does not have any symptoms. Sometimes it is discovered when a person has a chest x-ray for another medical reason.
Smokers who quit when precancerous changes in their lung cells are discovered often find that the damaged tissue returns to normal. People who continue to smoke may get cancer. Chest x-rays, CT scans (a series of x-ray images assembled by a computer), and other tests are used to diagnose a tumor in the lung. X-rays and CT scans do not show whether tumors are benign or malignant.
Q. How is lung cancer diagnosed?
A. To check for cancer, a biopsy must be performed. A biopsy is surgical removal of a small piece of tissue for microscopic examination to determine if cancer cells are present. Biopsy is the most important procedure in diagnosing cancer.
Sometimes cancer cells can be found in a person's sputum – the thick fluid that is coughed up from your airways.
Other types of tests can also be used to diagnose lung cancer. Bronchoscopy is a test in which the doctor uses a thin, lighted tube called a bronchoscope to examine breathing passages. The tube also allows the doctor to collect some cells to examine under a microscope. If cells cannot be reached with a bronchoscope, the doctor may insert a needle through the chest wall to withdraw a sample of cells. This procedure is called a needle aspiration/biopsy. A needle can also be used to remove a sample of fluid from the sac called the pleura that surrounds the lungs. A pathologist can examine these samples for the presence of cancer cells.
When the doctor can feel swelling of the lymph nodes or liver, he or she may also biopsy these to check for cancer cells.
In many cases, a surgical procedure called a thoracotomy or thoracoscopy is needed to diagnose lung cancer.
If lung cancer is diagnosed, additional tests may be done to determine the stage of the disease. Staging is the process of determining how much the cancer has spread and what parts of the body have been affected. These tests may include operations (mediastinoscopy), radionuclide scans or magnetic resonance imaging (MRI).
Q. What are the signs and symptoms of lung cancer?
A. Signs and symptoms of lung cancer can include:
- A persistent cough or wheezing
- Recurring bronchitis or pneumonia
- Pain or weakness in a shoulder or arm
- Weight loss
- Chest pain
- Shortness of breath
- Constant fatigue
- Loss of appetite
- Coughing up blood
- Swelling of the neck and face
- Streaks of blood in the sputum
- A sharp decrease in blood sodium level
Q. How is lung cancer treated?
A. The doctor is the best person to answer questions about treatment. The choice of treatment options for each person will depend upon the stage of the disease and the person's general state of health. Several kinds of treatment are available. Chemotherapy or a combination of chemotherapy and radiation therapy are the most common treatments for small cell lung cancer. Surgery is usually the treatment of lung cancers that are localized (i.e., have not spread). Radiation therapy and chemotherapy are often used because the disease has spread by the time it is diagnosed. Some researchers are developing biological therapy for lung cancer. This type of treatment uses the body's immune system to fight cancer cells.
- Surgery: The preferred treatment for persons with non-small cell lung cancer that has not spread beyond the chest. Surgery can be part of the treatment for small cell lung cancer, but is usually appropriate for only a small number of people.
- Chemotherapy: Drugs that are used to kill cancer cells. The drugs are usually given in cycles, with each treatment followed by a period of recovery. Most patients have chemotherapy as outpatients. Chemotherapy can temporarily cause hair loss, nausea and vomiting, bruising easily, and a susceptibility to infections. Side effects vary according to the drug(s) and the patients.
- Radiation Therapy: The use of high-energy rays to damage cancer cells so they stop reproducing or growing. After radiation treatments, patients may become fatigued, and the skin near the treatment area may become discolored, itchy and sensitive. Some patients have a dry, sore throat for a short while after treatment.
Q. Are clinical trials a part of treatment?
A. The lung cancer team at The James believes that often the most appropriate and best treatment option for patients with lung cancer is through a clinical trial. It is through clinical trials today that the new standard of care for tomorrow is established.
For some lung cancer patients, one of the options may involve a clinical trial. Clinical trials are studies conducted with the consent of patients to evaluate a new treatment. Ask your doctor about clinical trials or call the cancer information lines in your area, or call the James Line at 1-800-293-5066.