Lung cancer is the most common cause of cancer death, not only in the United States, but also around the world. Lung cancer is responsible for an estimated 160,000 deaths in the United States annually. It is one of the most preventable malignancies affecting modern man. There are two major types: non-small cell lung cancer and small cell lung cancer, so named because of how the cells look under a microscope. Non-small cell lung cancer is more common, and it generally grows and spreads more slowly. There are three main types of non-small cell lung cancer, named for the type of cells in which the cancer develops: squamous cell carcinoma, adenocarcinoma, and large cell lung cancer. Small cell lung cancer grows more quickly and is more likely to spread to other organs in the body.
Signs and Symptoms
What Causes It?
Exposure to carcinogens (cancer causing agents) damages DNA in the cells of the body. The major cause of lung cancer is cigarette smoking. Other contributing factors include environmental tobacco smoke, occupational exposure to carcinogens, and diet.
Who Is Most At Risk?
Tobacco smoke is the biggest carcinogen, responsible for 85% of all lung cancers in the United States. Risk increases with the amount of tobacco used, and the amount of time it has been used. Non smokers exposed to tobacco smoke are also at risk of developing lung cancer. Other forms of tobacco use, such as cigar smoking and pipe smoking, are also associated with lung cancer. Other risk factors include:
What to Expect at Your Doctor's Office
If you have symptoms associated with lung cancer, see your health care provider. Your health care provider will evaluate your medical history, smoking history, exposure to environmental and occupational substances, and family history of cancer. You will also have a physical exam, and your provider may analyze your breath to determine if you have lung cancer.
You may be sent for a chest x-ray and other tests. These include a sputum cytology, the microscopic examination of cells obtained from a deep cough sample of mucus in the lungs. In some cases, your doctor may order a computed tomography (CT) scan. Research suggests these scans may reduce deaths from lung cancer by 20%. A biopsy -- the removal of a small sample of tissue for examination under a microscope by a pathologist -- can confirm whether you have cancer.
If you have cancer, your provider will want to learn the stage (or extent) of the disease to find out whether the cancer has spread, particularly to the brain or bones, using tests such as CT scan, magnetic resonance imaging (MRI), radionuclide scan, positron emission tomography (PET), and bone scan.
The best means of prevention is to never start smoking or chewing tobacco, or to stop using tobacco products. A healthy diet is also an important part of prevention. In fact, studies show adquate vitamin D levels are associated with a reduced risk of lung cancer.
A treatment plan depends on the cell type, stage of disease, possibility for removing the tumor, and the patient's ability to survive surgery.
Various therapies can treat lung cancer.
Surgical and Other Procedures
Surgery is one of the few treatments capable of curing non-small cell lung cancer. Removal of a small part of the lung is a segmental or wedge resection, removal of an entire lobe of the lung is a lobectomy, and removal of an entire lung is a pneumonectomy. Doctors may prescribe radiation therapy before surgery to shrink a tumor, or after surgery to destroy remaining cancer cells. They may also use radiation therapy instead of surgery, or to relieve symptoms, such as shortness of breath.
Complementary and Alternative Therapies
A comprehensive treatment plan for lung cancer may include a range of complementary and alternative therapies (CAM). Studies show several CAM therapies may be helpful in improving the overall care of patients with lung cancer. Ask your team of doctors about the best ways to incorporate these therapies into your overall treatment plan. Some CAM therapies may be contraindicated in lung cancer, and some may interact negatively with medications or therapies used in conventional cancer care. Work with a qualified professional when deciding if and what CAM therpaies to use. Always tell your doctor about the herbs and supplements you are taking.
Nutrition and Supplements
These nutritional tips may help reduce symptoms:
You may address nutritional deficiencies with the following supplements:
Herbs may be an important part of an integrated cancer care strategy, but they should only be prescribed by a knowledgeable practitioner who is collaborating with all of your physicians.
Few studies have examined the effectiveness of specific homeopathic therapies, however professional homeopaths may consider the following remedies for the treatment of gastritis symptoms (such as nausea and vomiting) based on their knowledge and experience. Before prescribing a remedy, homeopaths take into account your constitutional type, includes your physical, emotional, and psychological makeup. An experienced homeopath assesses all of these factors when determining the most appropriate treatment for you as an individual.
An experienced homeopath may prescribe a regimen to support general health during lung cancer. Acute remedies may be useful to relieve symptoms associated with complications. You should only take homeopathic remedies under the direction of an experienced homeopath, and in consultation with all of your treating physicians.
Homeopathy may help reduce symptoms and strengthen overall constitution, reduce the effects of stress during cancer, and also help reduce the side effects of chemotherapy.
While acupuncture is not used as a treatment for cancer itself, evidence suggests it can be a valuable therapy for cancer-related symptoms (particularly nausea and vomiting, which often accompany chemotherapy treatment). Studies indicate that acupuncture may help reduce pain and shortness of breath. Acupressure (pressing on rather than needling acupuncture points) has also proved useful in controlling breathlessness. Patients can treat themselves using this technique.
Some acupuncturists prefer to work with a patient only after the completion of conventional medical cancer therapy. Others will provide acupuncture or herbal therapy during active chemotherapy or radiation. Acupuncturists treat cancer patients based on an individualized assessment of the excesses and deficiencies of qi located in various meridians. In many cases of cancer-related symptoms, acupuncturists detect a qi deficiency in the spleen or kidney meridians.
The outlook varies by cell type and stage of the disease. In general, the prognosis is better for squamous cell cancers than for adenocarcinomas. Early detection improves chances of survival.
Periodic follow up is useful to help to detect recurrence of the lung cancer or other smoking-related cancers. Frequent follow up and rehabilitation for loss of lung function from cancer, surgery, or other treatment may be necessary.
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Review Date: 11/20/2016
Reviewed By: Steven D. Ehrlich, NMD, Solutions Acupuncture, a private practice specializing in complementary and alternative medicine, Phoenix, AZ. Review provided by VeriMed Healthcare Network. Also reviewed by the A.D.A.M Editorial team.
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