1. Severe dyspnea in the late stage of lung cancer leads to respiratory failure, which is also one of the common causes of death in lung cancer patients;

2. Related symptoms caused by distant metastasis of lung cancer are also common causes of death of lung cancer patients;

Lung cancer with extensive systemic metastasis has corresponding symptoms and signs such as jaundice, ascites, abnormal liver function, dyspnea, cough, headache and coma. ; Controlling the spread and metastasis of lung cancer is a common cause of death in the treatment of lung cancer