Cancer occurs when the body’s cells grow uncontrollably and may spread to other parts of the body. Lung cancer starts in the lungs, often in airway cells, and can quickly spread to areas like lymph nodes, the brain, the liver, bones, and adrenal glands.
In the initial stages, lung cancer does not show any symptoms. Symptoms that appear at an advanced stage usually include a persistent cough that doesn't go away, spotting blood while coughing, shortness of breath, hoarseness, losing weight, chest pain, and headache.
Smoking is the primary risk factor for lung cancer, though exposure to radon gas, asbestos, air pollution, and family history also increase the risk. Quitting smoking greatly lowers the chances of developing this disease. Treatment modalities can include a combination of surgery, chemotherapy, radiotherapy, and immunotherapy.
