The truth and how to prevent cancer


Information on Lung Cancer

When you breathe in, air passes from yourwith surgery, while small cell lung carcinoma
nose or mouth through the windpipe (trachea),(SCLC) usually responds better to
which divides into two tubes (airways), onechemotherapy and radiation.The most common
going to each lung. These are known as thecause of lung cancer is long term exposure to
right and left bronchus and they divide totobacco smoke. The occurrence of lung cancer
form smaller tubes called bronchioles, whichin non-smokers, who account for fewer than
carry air through the lungs. At the end of10% of cases, appears to be due to a
the bronchioles are millions of tiny air sacscombination of genetic factors, radon gas,
called alveoli. In the alveoli, oxygen isasbestos, and air pollution, including
absorbed from air breathed in and passes intosecond-hand  smoke.
the bloodstream to be circulated around the
body.Lung cancer is one of the most common cancers
in the world. It is a leading cause of cancer
Lung cancer is one of the most common typesdeath in men and women in the United States.
of cancer. The lungs are a pair ofCigarette smoking causes most lung cancers.
cone-shaped organs situated inside the chest,The more cigarettes you smoke per day and the
they bring oxygen into the body and take outearlier you started smoking, the greater your
waste carbon dioxide. There is a strong linkrisk of lung cancer. High levels of
between smoking and lung cancer. There arepollution, radiation and asbestos exposure
two main categories of lung cancer; Smallmay  also  increase  risk.
Cell Lung Cancer (SCLC) , and Non-Small Cell
Lung Cancer (NSCLC). World-wide over 1Cancer of the lung, like all cancers, results
million people are diagnosed with lung cancerfrom an abnormality in the body's basic unit
each  year.of life, the cell. Normally, the body
maintains a system of checks and balances on
Sometimes the instructions to a cell gocell growth so that cells divide to produce
haywire and that cell and its offspringnew cells only when needed. Disruption of
reproduce wildly, without regard for thethis system of checks and balances on cell
shape and function of a lung. That wildgrowth results in an uncontrolled division
reproduction can form tumors that clog up theand proliferation of cells that eventually
lung and make it stop functioning as itforms  a  mass  known  as  a  tumor.
should. Because of the large size of the
lungs, cancer may grow for many years,Yet most lung cancer deaths could be
undetected, without causing suspicion. Lungprevented. That's because smoking accounts
cancer can spread outside the lungs withoutfor nearly 90 percent of lung cancer cases.
causing any symptoms.Adding to the confusion,Your risk of lung cancer increases with the
the most common symptom of lung cancer, alength of time and number of cigarettes you
persistent cough, can often be mistaken for asmoke. If you quit smoking, even after
cold  or  bronchitis.smoking for many years, you can significantly
reduce your chances of developing lung
The main types of lung cancer are small cellcancer. Protecting yourself from other risk
lung carcinoma and non-small cell lungfactors for lung cancer, such as exposure to
carcinoma. This distinction is importantasbestos, radon and secondhand smoke, also
because the treatment varies; non-small celldecreases your risk.
lung carcinoma (NSCLC) is sometimes treated



1 A B C D E F 85 86 87 88 89 90 91 92 93 94 95 96 97 98 100 101 102 103 104 105 106 107 108 110 111 112 113 114 115 118 119 122 123 124 125 126 127 128