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Non-Small Cell Lung Cancer (NSCLC)

About 8 to 9 out of 10 cases of all lung cancers are the non-small cell type.

There are 3 sub-types of NSCLC. The cells in these sub-types differ in size, shape, and chemical make-up.

  • Squamous cell carcinoma – About 25 to 30 percent of all lung cancers are this kind. They are linked to smoking and tend to be found in the middle of the lungs, near a bronchus.
  • Adenocarcinoma - This type accounts for about 40 percent of lung cancers. It is usually found in the outer part of the lung.
  • Large-cell (undifferentiated) carcinoma – About 10 to 15 percent of lung cancers are this type. It can start in any part of the lung. It tends to grow and spread quickly, which makes it harder to treat.

Source: Adapted from content provided by the American Cancer Society (http://www.cancer.org). Always consult a physician about specific medical problems.