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Lung cancer is the leading cause of cancer death in both men and women in the United States. Each year, more people die of lung cancer than of colon, breast, and prostate cancers combined.
Lung cancer is a type of cancer that begins in the lungs. The lungs are two spongy organs in the chest that take in oxygen when we breathe and remove carbon dioxide. The air we breathe passes through the trachea (windpipe) and then branches into tubes called bronchi. These bronchi branch into smaller tubes (bronchioles), and at the end of these tubes are tiny air sacs called alveoli. Cancer is a disease in which cells in the body grow out of control. When cancer starts in the lungs, it is called primary lung cancer.
What is lung cancer?
Lung cancer is a type of cancer that affects the lungs. The most common type of lung cancer is non-small cell lung cancer, which makes up about 80% of all cases. Small cell lung cancer is less common but more aggressive.
Lung cancer symptoms can include coughing up blood, shortness of breath, chest pain, and weight loss. If you have these symptoms, it’s important to see a doctor so that they can rule out other possible causes and begin treatment if necessary.
Smoking is the leading cause of lung cancer. It’s estimated that smokers are 20 times more likely to develop lung cancer than nonsmokers. Other risk factors for developing lung cancer include exposure to secondhand smoke, asbestos, radon gas, and air pollution.
There are two main types of treatment for lung cancer: surgery and chemotherapy. Surgery is usually the first line of treatment and may be followed by chemotherapy or radiation therapy. The type of treatment given will depend on the stage of the cancer and the overall health of the patient.
Lung cancer can be a serious disease with potentially fatal complications. Early diagnosis and treatment is essential for the best possible outcome.
Symptoms of lung cancer
Most people with early-stage lung cancer don’t have any symptoms. This is one reason why lung cancer is so hard to catch early.
When symptoms do occur, they’re usually related to the tumor growing large enough to press on nearby structures. The most common symptom is a cough that doesn’t go away. Other symptoms can include:
– Shortness of breath
– Chest pain
– Coughing up blood or rust-colored sputum (phlegm)
– Loss of appetite
– Weight loss and fatigue
When to see a doctor for lung cancer
If you experience any of the following lung cancer symptoms, it is important to see a doctor right away:
-A cough that does not go away and gets worse over time
-Coughing up blood, even a small amount
-Shortness of breath
-Losing weight without trying
-Persistent nausea or vomiting
In addition to these symptoms, there are also some risk factors which may increase your chances of developing lung cancer. These include:
-Smoking cigarettes, cigars, or pipes
-Exposure to secondhand smoke
-Exposure to certain chemicals and substances, such as asbestos, radon gas, and air pollution
Causes of lung cancer
Lung cancer is the leading cause of cancer death in both men and women in the United States. Each year, more people die of lung cancer than of colon, breast, and prostate cancers combined. Cigarette smoking is by far the most important risk factor for developing lung cancer. In fact, smokers are 25 times more likely to develop lung cancer than nonsmokers.
Smoking cigarettes damages nearly every organ in your body, including your lungs. Your lungs are made up of tiny air sacs called alveoli. The alveoli are surrounded by a network of small blood vessels called capillaries. When you inhale cigarette smoke, it damages the cells that line the airways and air sacs in your lungs. This damage starts a repair process that can lead to lung cancer.
Most lung cancers develop over many years as a result of this type of cell damage. However, some types of lung cancers can develop much more quickly.
How smoking causes lung cancer
Smoking is the leading cause of lung cancer, accounting for about 80% of all cases. Cigarette smoke contains more than 7,000 chemicals, including at least 70 that can cause cancer.
Lung cancer develops when abnormal cells in the lung grow out of control. These abnormal cells usually form a tumor, which can either be malignant (cancerous) or benign (noncancerous).
Cancerous tumors can spread to other parts of the body and are usually fatal. Benign tumors usually don’t spread and are often treatable.
Smoking damages nearly every organ in the body, including the lungs. The damage starts at the cellular level. When you inhale cigarette smoke, it damages the DNA inside your cells. This damage can lead to mutations, or changes, in the genes that control cell growth.
These gene mutations cause the cells to grow uncontrollably and continue living after healthy cells would die. The accumulating abnormal cells form a tumor. Most lung cancers form in the epithelial cells that line the air passages in your lungs.
Types of lung cancer
Lung cancer is divided into two main types, small cell and non-small cell lung cancer, which are named for the type of cells that the cancer starts in.
Small cell lung cancer (SCLC)
-Accounts for 10 to 15 percent of all lung cancers
– More common in men than women
– Usually spreads more quickly than non-small cell lung cancer
Non-small cell lung cancer (NSCLC)
– The most common type of lung cancer, accounting for about 85 percent of cases
– Can be divided into several subtypes, including adenocarcinoma, squamous cell carcinoma, and large cell carcinoma
– Usually grows more slowly than small cell lung cancer.
Risk factors for lung cancer
Smoking is the number one cause of lung cancer, but there are other risk factors as well. These include:
-Exposure to secondhand smoke
-Exposure to certain chemicals and pollutants
-A family history of lung cancer
-Certain medical conditions, such as emphysema or bronchitis
Complications of lung cancer
Lung cancer can cause a number of complications, including:
– Shortness of breath
– Coughing up blood
These symptoms can be caused by the cancer itself or by the treatments used to treat the cancer. Treatment for lung cancer can also cause complications, such as:
– Kidney problems
Prevention of lung cancer
Lung cancer is the second most common cancer in both men and women and is the leading cause of cancer death in the United States. Lung cancer kills more Americans each year than breast cancer, prostate cancer, and colon cancer combined.
There are two main types of lung cancer: non-small cell lung cancer (NSCLC) and small cell lung cancer (SCLC). NSCLC makes up about 85 percent of all lung cancers. The three most common subtypes of NSCLC are squamous cell carcinoma, adenocarcinoma, and large cell carcinoma.
Smoking is by far the most important risk factor for developing lung cancer. In fact, smokers are 20 times more likely to develop lung cancer than nonsmokers. Cigarette smoking accounts for about 87 percent of all lung cancers.
The best way to prevent lung cancer is to avoid smoking or to quit if you already smoke. If you have been a heavy smoker for many years, quitting smoking may not completely eliminate your risk of developing lung cancer, but it will greatly reduce your risk.
Treatment of Lung Cancer
Lung cancer is the second most common cause of cancer death in the United States, trailing only breast cancer. Statistics show that approximately 154,000 people will be diagnosed with lung cancer this year, and more than 63,000 people will die from the disease.
The prognosis for people with lung cancer is generally poor. While there are a number of approved treatments available that can prolong a person’s life, the majority of patients who are diagnosed with lung cancer will not survive beyond five years.
There are a number of factors that can increase a person’s chances of developing lung cancer, including smoking, exposure to environmental toxins, and genetics. Anyone can develop lung cancer – even nonsmokers – but it is more likely to occur in individuals who have previously had the disease or who have a family history of the disease.
There is no one cure for lung cancer, but treatment options include surgery, chemotherapy, radiotherapy and targeted drugs. In many cases, different combinations of these treatments are used to find an effective strategy for each individual patient. continual monitoring and regular check-ups are important part of maintaining good health after being treated for lung cancer
Lung cancer is a serious and potentially deadly disease. If you think you might have lung cancer, it’s important to see a doctor as soon as possible. There are many different types of lung cancer, and each type has its own set of symptoms, risk factors, and complications. Smoking is the leading cause of lung cancer, but there are other risk factors to be aware of as well. Some people with lung cancer can be cured, while others will need lifelong treatment. The best way to prevent lung cancer is to avoid smoking or exposure to secondhand smoke.