How lung cancer develops


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How lung cancer develops

How lung cancer develops

Cancers that spread to the lungs

Cancers that start in other organs (such as the breast, pancreas, kidney, or skin) can sometimes spread to the lungs (metastasize). Nevertheless, they are not lung cancer. For example, cancer starts in the breast and spreads to the lungs. It is still a type of breast cancer and not lung cancer. Treatment for lung metastatic cancer is based on where it started (the site of initial cancer).

Key Statistics on Lung Cancer

Most lung cancer statistics include small cell lung cancer (SCLC) and small cell lung cancer (NSCLC). Overall, about 13% of all lung cancers are SCLC and 84% are NSCLC.

How common is lung cancer?

Lung cancer (small and non-small cells) is the second most common cancer in men and women. Prostate cancer is common in men, and breast cancer is common in women. US Cancer Society of the United States estimates for 2020:

New cases of lung cancer: About 228,820 (116,300 in men and 112,520 in women)

Deaths from lung cancer: About 135,720 (72,500 in men and 63,220 in women)

Lung cancer mainly occurs in the elderly. Very few people diagnosed are under 45 years old.

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Lung cancer is the leading cause of cancer deaths in both men and women, accounting for approximately 25% of all cancer deaths. Every year, more people die from lung cancer than from colon cancer, breast cancer, and prostate cancer.

On the plus side, the number of new cases of lung cancer continues to decline, which is why people quit smoking. Besides, the number of deaths from lung cancer continues to decline due to smoking cessation and advances in early diagnosis and treatment.

Chance of getting lung cancer in a lifetime

In general, a man is about 1 to 15 times more likely to develop lung cancer in his lifetime, but for a woman, the risk is about 1 to 17. The risk is much higher for smokers, while it is lower for non-smokers. Black men are about 15% more likely than white men to develop lung cancer are. This rate is about 14% lower for black women than for white women.

Survival rates for people with lung cancer vary depending on the stage (extent) of cancer at the time of diagnosis. Despite the very serious prognosis (outlook) for lung cancer, some people with cancer recover early.


This cancer, like any other cancer, needs attention so that if you experience any symptoms related to this cancer, you should see a doctor immediately and start the treatment process.

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