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    What Is Lung Cancer                        Back To Home Page
       
       Warning: This is of vital importance. Often you will read that age is a factor as a cause of cancer.
                      This is true... however, there is never enough emphasis as to why. Age is a factor because
                      the older you get, the more susceptible to cancer you become... since your immune system
                      who'se job is to kill off cancer cells, has become severely weakened by all sorts of toxins,
                      parasites, pesticides, chemicals etc., so keep this in mind as you browse this site.

       Understandingly, lung cancer starts in the cells of the lungs. It is a disease of uncontrolled cell growth
       in the tissues of the lung.

       Most people know that the lungs are in the chest, one on each side of the heart. The right lung has
       three main parts, called lobes. The left lung is a bit smaller and has two lobes. The lungs are cushioned        and protected by a thin covering called the pleura. The pleura has two layers of tissue: one layer covers
       the lungs and the other lines the inside wall of the chest. There is a small amount of fluid (pleural fluid)        between the two layers of the pleura. So this basically describes what lungs are...
       but what are they for?

      You use your lungs when you breathe. The air you take in through your nose or mouth flows down the        trachea (windpipe). The trachea divides into two tubes called the left and right bronchi, which carry air
       to each lung. Once inside the lung, the bronchi divide into smaller and smaller tubes called bronchioles.        Each bronchiole ends in a cluster of tiny air sacs called alveoli. The alveoli takes oxygen from the air
       you breathe in and pass it into the blood for circulation to all parts of your body. The alveoli also remove        carbon dioxide from the blood, which is pushed out of the lungs when you exhale. So now you        understand the main purpose of your lungs... and now to a closer look at lung cancer.

       What most people don't know is that there are two types of lung cancer. The most common type is
       the non-small cell lung cancer, also known as (NSCLC). This cancer grows more slowly than the
       small cell lung cancer. While the small-cell lung cancer (SCLC) grows quickly and often spreads to        distant parts of the body.

       There is also a rare type of cancer called pleural mesothelioma which is often mistakenly called a lung        cancer. But pleural mesothelioma starts in the lining of the lung and is very different from cancer that
       starts in the lung.

       Now for the three types of non-small lung cancers, which are squamous cell carcinoma,
       adenocarcinoma, and large cell carcinoma. These account for about 80% of lung cancers, while
       small-lung cancer (also called oat) accounts for about 20%. The vast majority of all lung cancers are
       of the carcinoma type.

       It's important to understand these three types of cancers because treatment varies accordingly.
       Non-small cell lung carcinoma for example, is sometimes treated with surgery, while small cell lung        carcinoma, usually responds better to chemotherapy and radiation.

       Sources: www.cancer.ca / www.wikipedia.org / www.cancer.gov / www.medicine.net