A Visual Guide to Lung Cancer

A Visual Guide to Lung Cancer Lung cancer is the top cause of cancer deaths in both men and women. But this wasn’t always the case. Prior to the widespread use of mechanical cigarette rollers, lung cancer was rare. Today, smoking causes nearly 9 out of 10 lung cancer deaths, while radon gas, pollution, and […]

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A Visual Guide to Lung Cancer

Lung cancer is the top cause of cancer deaths in both men and women. But this wasn’t always the case. Prior to the widespread use of mechanical cigarette rollers, lung cancer was rare. Today, smoking causes nearly 9 out of 10 lung cancer deaths, while radon gas, pollution, and other things play a er role. Newly developed drugs provide new hope for those diagnosed today.

Cigarettes are packed with cancer-causing chemicals. They also disarm the lungs’ natural defense system. The airways are lined with tiny hairs called cilia. To protect the lungs, they sweep out toxins, bacteria, and viruses. Tobacco smoke stops the cilia from doing their job. This lets the cancer-causing chemicals build up.

Lung cancer begins quietly. There are usually no symptoms or warning signs in the early stages. As it gets worse, you may notice:

A type of scan called spiral CT may pick up early lung cancers in some people, but it’s not clear whether it finds them early enough to save lives. 

The U.S. Preventive Services Task Force recommends that heavy smokers ages 55-80 get a CT scan every year. The same goes for those who used to smoke a lot and quit less than 15 years ago.  

If your doctor thinks you might have lung cancer — for instance, because you have a long-lang cough or — you’ll get a chest X-ray or other imaging tests. You may also to cough up phlegm for a sputum test. If either of these tests suggest that you could have cancer, you’ll probably to get a biopsy.

Your doctor will take a sample of the suspicious growth, usually with a le, for examination under a microscope. By studying the sample, a pathologist can determine whether the tumor is lung cancer, and if so, what kind.

-cell lung cancer is more aggressive, meaning it can spread quickly to other pa of the body early in the disease. It is strongly tied to cigarette use and is rare in nonsmokers. Non--cell lung cancer grows more slowly and is more common. It’s responsible for almost 85% of all lung cancers.

Staging describes how far someone’s cancer has spread. -cell lung cancer is divided into two stages: “Limited” means the cancer is confined to one lung and maybe nearby lymph nodes. “Extensive” means the cancer has spread to the other lung or beyond. Non--cell lung cancer is assigned a stage of I through IV, depending on how far it has spread.

When doctors find non--cell lung cancer before it spreads beyond one lung, an operation can sometimes help. The surgeon may remove the part of the lung that has the tumor, or if necessary, the entire lung. Some people get radiation or afterward to kill any remaining cancer cells. Surgery usually doesn’t help with -cell lung cancer because it probably has already spread before diagnosis.

When lung cancer spreads too far to be cured, treatments may ll help people live longer and have a better quality of life. Radiation and can shrink tumors and help control symptoms, such as bone pain or blocked airways. is usually the main treatment for -cell lung cancer.

Targeted therapy plus may help, if other approaches don’t work. One type prevents the growth of new blood vessels that feed cancer cells. Others interrupt the signals that prompt lung cancer cells to multiply, as shown in the image here.

Immunotherapy works with your immune system to fight advanced cases of non--cell lung cancer. It doesn’t work for everyone, but when it does, the results look strong. You’d also get .

Clinical trials help doctors explore promising new treatments for lung cancer. Ask your doctor if there’s one that you could join, what to conr, and how to sign up.

Being diagnosed with lung cancer can be a shock. If you smoke, or used to, it’s not too late to make healthy changes. Research shows that people who quit smoking after ing they have lung cancer do better than those who keep smoking.

While smoking is the top cause of lung cancer, it is not the only risk factor. Breathing in secondhand smoke at home or at work also appears to raise your risk. People who are married to someone who smokes are 20% to 30% more likely to get lung cancer than the spouses of nonsmokers.

Some make lung cancer more likely. People who work with uranium, arsenic, and other chemicals should try to limit their exposure. Asbestos, which was once widely used in insulation, is a known cause of lung cancer. It’s rarely used now, but workers who were exposed years ago are ll at risk.

This natural radioactive gas is found at higher than normal levels in certain pa of the U.S. The gas can build up in homes and raise the risk of lung cancer, especially in people who smoke. It is the second leading cause of lung cancer in the U.S. You can’t smell or see it, but you can use a simple test kit to find it.

It causes far fewer cases than smoking, but air pollution is ll something to avoid. Expe think that pollution from s, factories, and power plants may affect the lungs like secondhand smoke does.

Lung cancer does happen to people with no well-known risk factors — including those who’ve never smoked. Researchers don’t know why. It seems to happen to women more than men. And one type, adenocinoma, is more common in nonsmokers than smokers.

Lung cancer is the leading cause of cancer deaths for men and women. But if you don’t smoke and you avoid other people’s smoke, that will greatly lower your odds of getting it. If you smoke, do whatever it takes to quit. It often takes several tries to kick the habit, so keep trying. It’s worth it, and will benefit your whole body.

Sources
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Medically Reviewed on 5/28/2018

Reviewed by Carol

DerSarkissian on May 28, 2018

IMAGES PROVIDED BY:

1)         3D4Medical.com
2)         Louisa Howard / Photo Researchers, Inc
3)         Echo/Cultura
4)         James Cavallini / Photo Researchers, Inc
5)         Du Cane Medical Imaging Ltd. / Photo Researchers, Inc
6)         Shannon Fagan/Riser
7)         Michael Abbey / Photo Researchers, Inc
8)         Brian Evans / Photo Researchers, Inc.
9)         ry Slaven/The Medical File
10)       Peter Widmann/Imagebroker.net
11)       SPL / Photo Researchers, Inc.
12)       Mason Morfit/The Medical File
13)       Nacho Muro/Age Fotostock
14)       Hitoshi Nishimura/Taxi Japan
15)       Alain Le Bot/Photononstop
16)       Steve Cole/Photodisc
17)       Nello Giambi/Stone
18)       Jacobo Zanella/Flickr
19)       Stone Images/Age Fotostock

REFERENCES:

American Cancer Society web site.
University of Texas M.D. Anderson Center web site.
National Cancer Intute web site.
Toxilogical Sciences, November 2001.
Wakelee, H. Journal of Clinical Oncology, Feb. 10, 2007.
World Health Organization web site.
U.S. Preventive Services Task Force web site.
Memorial Sloan Kettering Cancer Center: “Why a New Immunotherapy for Lung Cancer Only Works for Some People.”
Hopkins Medicine: “Former Smokers: What’s Your Risk for Lung Cancer?”

Reviewed by Carol

DerSarkissian on May 28, 2018

This tool does not provide medical advice. See additional information.

THIS TOOL DOES NOT PROVIDE MEDICAL ADVICE. It is intended for general informational purposes only and does not address individual circumstances. It is not a subtute for professional medical advice, diagnosis or treatment and should not be relied on to make decisions about your health. Never ignore professional medical advice in seeking treatment because of something you have read on the WebMD Site. If you think you may have a medical emergency, immediately call your doctor or dial 911.

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A Visual Guide to Lung Cancer


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