Lung Cancer is the uncontrolled growth of cells in one or both lungs. These cells don’t carry out the needs of normal lung cells and do not develop into some healthy lung tissue.
A cancer begins with an error, or mutation, in a cell’s DNA. DNA mutations can be caused by the normal aging process or through environmental factors, such as cigarette smoke and a exposure to poisonous gas.
Coughing
Pain in the chest, shoulder, or back
Shortness of breath
Harsh sounds with each breath (stridor)
Recurrent lung problems, such as bronchitis or pneumonia
Coughing up phlegm or mucus
Coughing up blood
If lung cancer is suspected as a result of a screening procedure, a small piece of tissue from the lung must be examined under a microscope to look for cancer cells.
Centers for Disease Control and Prevention (CDC)
ClinicalTrials.gov
Food and Drug Administration (FDA)
National Cancer Institute (NCI)
National Institutes of Health (NIH)
National Library of Medicine (NLM)
United States Surgeon General
World Health Organization (WHO)