What is Lung Cancer & Types

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Lung Cancer
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What is Lung Cancer
Cancer which begins in the lung is called
primary Lung Cancer. Lungs are two spongy organs
inside chest which take in oxygen while inhaling
and release carbon dioxide during exhalation.
Uncontrolled growth of abnormal cells in one or
both lungs, typically in cells lining the air
passages divide rapidly form tumors. As these
tumors become large numerous, they also
undermine lung capacity to provide oxygen to the
blood stream. These tumors however, can be benign
or malignant. Tumors which remain in a single
place and do not spread are called Benign
Tumors. Malignant Tumors are dangerous and
spread to other parts of the body through
lymphatic system or the blood stream. When
metastasis occurs, cancer is much harder to
treat.
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Small Cell Lung Cancer 
Types of Lung Cancer
Non-Small Cell Lung Cancer 
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Small Cell Lung Cancer
This type of cancer almost exclusively
occurs in heavy smokers is far less common than
non-small cell lung cancer.
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Non-Small Cell Lung Cancer 
This is an umbrella term used for many types
of lung cancers which behave in a similar
fashion. Non-small cell lung cancers generally
include large cell carcinoma, adenocarcinoma and
squamous cell carcinoma.
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