"lung cancer"의 정의 및 의미

What is "lung cancer"?

Lung cancer is a type of cancer that starts in the lungs, usually in the cells that line the air passages. It is often associated with smoking, but it can also occur in non-smokers due to other risk factors such as exposure to secondhand smoke, radioactive gas, or air pollution. Symptoms of lung cancer may include persistent cough, chest pain, difficulty breathing, coughing up blood, hoarseness, fatigue, and unexplained weight loss. Treatment options for lung cancer depend on factors such as the type and stage of cancer but may include surgery, chemotherapy, radiation therapy, targeted therapy, immunotherapy, or a combination of these approaches. Early detection can improve the chances of successful treatment and recovery.