Lung adenocarcinoma belongs to non-small cell carcinoma and is a common type of lung cancer. Lung adenocarcinoma, a malignant tumor disease, mainly originates from the epithelium of the bronchial mucosa, and in a small number of patients, the malignant tumor cells may originate from the mucous glands of the large bronchial tubes. The common symptoms caused by the development of this disease, including chest wall pain, cough, shortness of breath, bloody sputum, fever, etc., which usually appear in the middle and late stages. Early stage lung adenocarcinoma patients have a chance to be cured after surgical resection of the lesions, but most of the patients have already progressed to the advanced stage when the disease is detected, and the prognosis they get is relatively poor, with a lower five-year survival rate and more serious hazards they face. In order to increase the cure rate of lung adenocarcinoma, it is recommended to have regular medical checkups so that the disease can be detected and treated at an early stage. If you have abnormal coughing symptoms with unknown reasons, you should consult a doctor in time and try not to delay.