Stage Four Stages Of Lung Cancer

Lung cancer is a non-infectious disease that is caused by unhealthy mutated cells that divide out of control. It is the first cause of cancer death in men and women worldwide, with approximately 1,370,000 deaths a year.
The chances of developing lung cancer are significantly increased from smoking and exposure to air pollutants such as asbestos, smog or radon- this is why cancerous cells are found in the lining of the respiratory tract. Almost 90 percent of lung cancer cases are caused by smoking, but anyone can develop the cancerous cells. When breathing in the air pollutants such as radon and smoke, the cells lining the lungs and respiratory tract are disrupted- long exposure to these chemicals pose the possibility of cell mutations causing
Stage one of lung cancer is when the cancer tumour or radius of cells is no larger than 5cm and hasn’t spread to lymph nodes- it is known as early lung cancer. Stage two of lung cancer has a cancerous tumour or radius of cells no bigger than 7cm, it may have spread to nearby lymph nodes and is growing to other parts of the lung and outside of the lung. Stage three of lung cancer is when the cancer is any size and has spread to lymph nodes, the cancer could be growing into other parts of the lung and tissues and structures further away from the lung but not into other organs. The final stage of lung cancer, stage 4, is the most severe form of lung cancer where the cancer has spread to the heart or other organs in the body such as the brain or liver. Stage 4 also includes the spreading of cancerous cells to the other lung as it typically only develops in one- this will show that it is spreading around the body. As the lung cancer progresses through stages, it can cause back pain due to tumours growing in size. The tumours cause pressure that cause back pain. Another reason that back pain may be a problem is that the cancer could have spread to the spine or ribs, in stage 4 of lung