How does lung cancer spread and metastasize? There are three ways

If lung cancer is not well controlled in the early stages, it is easy for the cancer to metastasize, which can lead to worsening of the condition. The spread and metastasis of lung cancer include direct diffusion, lymphatic metastasis and hematogenous metastasis. If hematogenous metastasis occurs, it means that the condition is already very serious and must be taken seriously and actively cooperate with the doctor's treatment.

Lung cancer patients will have symptoms such as cough, fever, chest pain in the early stage. After these symptoms appear, patients should go to the hospital for examination and treatment in time. While lung cancer is still in the early stage and has not spread or metastasized, the tumor should be removed to improve the patient's survival rate. If lung cancer develops to the later stage, cancer cells can spread and metastasize to other tissues and organs in the body, which can greatly increase the difficulty of treatment. So how does lung cancer spread and metastasize?
1. How does lung cancer spread and metastasize?
1. Direct spread <br/>Lung cancer can directly invade surrounding tissues and organs, causing the spread of cancer. After forming, central lung cancer can grow inward or outward along the bronchial wall, causing bronchial lumen obstruction. Peripheral lung cancer, as the tumor grows, can directly invade adjacent lung tissue. As the tumor continues to grow, it can also invade other organs in the chest.
2. Lymphatic metastasis Lymphatic metastasis is a common way for lung cancer to metastasize. Cancer cells will first metastasize to the intrapulmonary lymph nodes or hilar lymph nodes near the tumor, then to the mediastinal lymph nodes on the same side of the lesion, and finally to the supraclavicular lymph nodes on the same side of the lesion and the contralateral mediastinal lymph nodes. The farther the lymphatic metastasis is, the more serious the disease is.
3. Hematogenous metastasis <br/>The late-stage metastasis of lung cancer is mainly hematogenous metastasis. Cancer cells can be transferred to multiple organs throughout the body, such as the brain, bones, liver, adrenal glands, etc. through blood circulation.
2. What are the symptoms of lung cancer metastasis ?<br/>The symptoms of lung cancer metastasis are related to the organ of metastasis. If lung cancer metastasizes to extrathoracic lymph nodes, it may manifest as enlarged lymph nodes, among which supraclavicular lymph nodes are the most common; if brain metastasis occurs, the patient will have symptoms such as headache, dizziness, vomiting and even paralysis; if bone metastasis occurs, it may cause bone pain symptoms, which may affect daily activities in severe cases; if liver metastasis occurs, it may cause nausea, fatigue, abdominal distension, discomfort in the liver area and other symptoms; if pancreatic metastasis occurs, it may cause acute pancreatitis, etc. The metastasis of lung cancer indicates that the condition is already very serious, and patients must pay attention to it and actively cooperate with doctors for treatment.