Risk factors of lung cancer and life expectancy
Among various deadly diseases, Lung cancer also threatens human life and cause of cancer deaths in both men and women around the globe. Lung cancer can be understood by common man as the uncontrolled growth of abnormal cells that start off in one or both lungs; usually in the cells that line the air passages. The abnormal cells do not develop into healthy lung tissue, they divide quickly and form lumps. People generally are gripped into lung cancer due to excessive cigarette smoking. Passive exposure to tobacco smoke can also results in lethal lung cancer. People can well comprehend that there are two types of lung cancer, which grows and spreads differently. These include: Small cell lung cancers (SCLC) Non-small cell lung cancers (NSCLC). Stages of lung cancer : There are various stages of lung cancer that denotes to the extent to which the cancer has spread in the human body. - Non-small cell lung cancer has four main...