What are the main causes of brain metastasis from lung cancer? Pay attention to these points

The main reasons for brain metastasis of lung cancer are, firstly, that cancer cells travel through the blood and then metastasize to the patient's brain tissue, where they grow and prevent in the patient's brain cells; secondly, that cancer cells avoid the filtering function of the lungs and metastasize to the patient's brain through the anastomotic branch circulation, leading to the occurrence of brain metastasis of lung cancer.

In real life, the occurrence of lung cancer brain metastasis is undoubtedly very painful for patients. This is a very harmful disease that causes serious harm to the patient's health and is not conducive to improving the quality of life. So, what are the main causes of lung cancer brain metastasis? Let's find out below!
When lung cancer metastasizes to the brain, the main reason is usually that cancer cells are transferred to the patient's brain tissue with the help of blood circulation. However, the specific metastasis mechanism of cancer cells is still unclear. It is generally believed that after lung cancer occurs, since cancer cells need to reproduce and grow, they need a large amount of blood as a nutrient solution, which requires a large amount of blood supply, causing some cancer cells to invade the human blood. Then the cancer cells invade the patient's brain with the blood and grow and reproduce in the patient's brain cells.
In addition, the cause of brain metastasis of lung cancer may also be that there are many vascular anastomoses between the patient's thoracic aorta and vertebral arteries, which causes the blood to bypass the filtering effect of the lungs and circulate directly to the patient's brain through the anastomosis, thereby inducing the metastasis of cancer cells in the patient's brain.
At this time, if the patient has some adverse symptoms such as headache and projectile vomiting, homonymous hemianopsia, limb movement disorders, language disorders, cognitive dysfunction, etc. in a short period of time, and if cerebrovascular disease can be ruled out, then brain metastasis induced by lung cancer can be considered.
Generally speaking, if lung cancer metastasizes to the brain, it is usually in the advanced stage of lung cancer. At this time, the patient's condition usually becomes very serious and early treatment is necessary to save the patient's life. If not treated in time, the patient may die in a short period of time.