How Is Lung Cancer Spread?

Lung cancer is generally a malignant tumor originating from the bronchial mucosa or glands of the lungs. It is generally not contagious and cannot be transmitted through any route. However, the disease has a certain degree of familial clustering and genetic susceptibility. If immediate family members have lung cancer, regular hospital check-ups are necessary. Lung cancer is often a common primary malignant tumor of the lungs, and is mostly considered to be related to long-term smoking, long-term exposure to ionizing radiation, genetic factors, and other reasons. After onset, symptoms such as cough, blood in the sputum, and chest pain may appear. In severe cases, the disease may invade other organs. Since lung cancer is a malignant tumor, it generally does not have infectivity and therefore cannot be transmitted to others. The harm caused to the body after onset is relatively large, and active cooperation with doctors for treatment is required. Patients can improve their condition through surgical resection of the lesion, and should also undergo adjuvant treatment with chemotherapy and radiotherapy to inhibit the growth and spread of cancer cells. In daily life, it is necessary to change unhealthy lifestyle habits, quit smoking and drinking in time, and avoid secondhand smoke to prevent adverse effects on oneself. Maintain good sleep habits, ensure adequate sleep at night, and avoid staying up late.