Lung cancer is the malignant transformation and expansion of lung tissue, and is the most lethal of all cancers worldwide, responsible for 1.2 million deaths annually. It is a leading cause of cancer death in men and women in the United States. Cigarette smoking causes most lung cancers. The more cigarettes you smoke per day and the earlier you started smoking, the greater your risk of lung cancer. High levels of pollution, radiation and asbestos exposure may also increase risk. There are many types of lung cancer. Each type of lung cancer grows and spreads in different ways and is treated differently. Treatment also depends on the stage, or how advanced it is.
Treatment may include chemotherapy, radiation and surgery. Lung cancer that originates in the cells of the lungs is called primary lung cancer; however, cancer may also spread to the lung from other parts of the body. Metastatic cancers spread to the lungs most commonly from the breast, colon, prostate, kidney, thyroid gland, stomach, cervix, rectum, testis, bone, and skin (melanoma). More than 90% of primary lung cancers start in the bronchi such lung cancer is called bronchogenic carcinoma.
The specific types of lung cancer are small cell carcinoma, squamous cell carcinoma, large cell carcinoma, and adenocarcinoma. The last three types of lung cancer are often referred to as nonsmall cell lung cancers. Alveolar cell carcinoma originates in the small air sacs of the lung (alveoli). Although alveolar cell carcinoma can occur at a single site, it often develops simultaneously in more than one area of the lung. Less common lung tumors are bronchial carcinoid (which may be cancerous or noncancerous), chondromatous hamartoma and sarcoma. Lymphoma is a cancer of the lymphatic system; it may start in the lungs or spread to them.
Lung cancer is the rapid growth of abnormal cells in the lung. It can start anywhere in the lungs and affect any part of the respiratory system . When we breathe in, the lungs take in oxygen, which our cells need to live and carry out their normal functions. When we breathe out, the lungs get rid of carbon dioxide, which is a waste product of the body’s cells. Cancers that begin in the lungs are divided into two major types, non-small cell lung cancer and small cell lung cancer, depending on how the cells look under a microscope.
1. Breast cancer
2. Colon cancer
3. Rectal cancer
4. Stomach cancer
Symptoms of Lung Cancer
1. Shortness of breath, wheezing, or hoarseness.
2. Difficulty swallowing.
3. Fatigue.
4. Loss of appetite or weight loss.
5. Constant chest pain.
6. Breathlessness.
Treatment of Lung Cancer
1. Chemotherapy
2. Radiation therapy
3. Surgery
Juliet Cohen writes articles for health doctor. She also writes articles for depression treatment and cancer treatment.
if passive smoking causes lung cancer how many pets have died from passive smoking?
All over the world studies the effects of passive smoking on the human population. It has been proven in these studies. What about our pets. I have yet to see a study into the effects of passive smoking on pets. So is it that all these so called studies are right or is it that to many health officals gave up smoking and now preaches to us.. I for once would like to see a study on pets.. Does anybody know of a study like this
Answer
Unfortunately, you are so very correct. Second hand smoke kills a tremendous amount of animals every year, animals with both 2, and 4 legs. In our myopic society animals have no rights under the law whats so ever. If a dog lives in a house, with someone who doesn’t care about there own health. That dogs owner probably will have even less regard for the health of there pet. It is time our society started to care about the life of all creatures, and especially those who can’t speak up for themselves. Pets ask nothing of us, but to give them some love, and affection. The least we can do for them, is not to poison the air they are forced to breathe.
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