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CHAPTER 4: LUNG CANCER DIAGNOSIS AND STAGING

Source: www.lungcancerguidebook.org
Topic: Cancer
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Sort Desciption: The long silent growth period of lung cancer has led to great ... imaging studies of the lungs and other early detection test; possible tests that ...

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CHAPTER 4: LUNG CANCER DIAGNOSIS AND STAGING INTRODUCTION The lungs are vital organs. Working with the heart and circulatory system, they provide lifesustaining oxygen and rid the body of carbon dioxide. Normal lungs have a great reserve capacity to meet the bodys need for oxygen across a wide variety of circumstances. The same is true of the heart and circulatory system. This reserve capacity permits cancerous lung tumors to grow for years without compromising lung function. Furthermore, the lungs do not have many nerves to transmit pain messages. Therefore, a cancerous lung tumor can grow for many years without causing any symptoms. Unfortunately, this means that most people are not diagnosed with lung cancer until late in the disease process.

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