Lung secondary malignant tumor mostly refers to malignant tumor foci transferred from other tissues through blood or lymphatic system, such as malignant tumor of stomach, malignant tumor of liver or malignant tumor of thyroid, which belongs to the manifestation of distant metastasis of malignant tumor.
Most of them are detected by chest X-ray examination during the review of patients with primary tumors. Most of the patients have no obvious manifestations, and a few patients may have symptoms such as cough, bloody sputum, fever and dyspnea.
After the emergence of malignant tumors in the lungs, it is recommended to go to the Department of Medical Oncology of regular hospitals in a timely manner. It can be treated by surgery, or assisted by radiotherapy and chemotherapy. In addition, usually must eat a light diet, quit smoking and drinking.