Squamous Cell Carcinoma
Large Cell Carcinoma
While the diagnosis of Small Cell Lung Cancer is less common, this form of lung cancer is more aggressive. While it develops in the lungs, Small Cell Lung Cancer can metastasize to other parts of the body.
Some of the known risk factors for lung cancer are: Smoking: Smoking is the greatest risk factor for lung cancer. Tobacco smoke causes more than 8 out of 10 lung cancer deaths. Exposure to second hand smoke increases the risk of developing lung cancer as well.
Chemical exposure: Certain professions where workers are regularly exposed to harmful chemicals can lead to an increased risk. They include but are not limited to:
Diseases: Chronic Obstructive Pulmonary Disease, Pulmonary Fibrosis and Tuberculosis place someone at higher risk for lung cancer.
Family history: There is an increased risk when immediate family members have had the disease especially at a young age.
Medical history: Individuals who have had previous exposure to radiation have an increased risk.
The National Comprehensive Cancer Network recommends that patients discuss their health history and individual risk factors with their physician to determine if lung cancer screening with a low dose CT scan is recommended. This includes individuals who are in one of these groups:
Group 1 individuals age 55 to 77 with a 30 or more pack year history who currently smoke or quit less than 15 years ago
Group 2 individuals aged 50 or older with a 20 or more pack year history who are either current or former smokers with at least 1 additional risk factor such as personal history of lung cancer, family history of lung cancer in first degree relatives, radon exposure, and occupational exposure