Lung cancer is a type of cancer that affects the lungs and is one of the most common cancers worldwide. It has several potential causes, including asbestos exposure, smoking, genetics or radiation. The main symptom is often a persistent cough but chest pain, weight loss and coughing up blood may also signal its presence. Treatments can include surgery, chemotherapy and radiation therapy to remove the cancerous cells. However, if detected early and treated appropriately, lung cancer can be cured with a high rate of survival. If you have any symptoms associated with lung cancer it is important to consult your doctor or visit a specialist cancer hospital for further assessment. Early detection and treatment of this condition may make all the difference in improving your prognosis.