What is the cause of bloody pleural effusion in lung cancer

summary

Lung cancer will appear for many reasons, the emergence of lung cancer will cause a lot of lung diseases. And the occurrence of bloody pleural effusion from lung cancer is also a very common phenomenon, which often occurs in patients. Now let's talk about the causes of bloody pleural effusion caused by lung cancer.

What is the cause of bloody pleural effusion in lung cancer

First, the phenomenon of lung cancer pleural effusion is because the chest is a closed cavity, the cancer itself metastasized to the parietal pleura. In this case, the cancer has metastasized and belongs to advanced lung cancer. At the same time, it is possible to detect cancerous cells in pleural effusion, because in the process of cancer metastasis, some cancerous cells will fall off into pleural effusion.

Second: it is negative pressure inside. Under normal circumstances, there is a very small amount of liquid (about 1-30 ml) between the parietal pleura and visceral pleura, which can reduce the friction between the two pleura in the process of respiratory activity, and is conducive to the relaxation and contraction of the lung in the chest. In patients with lung cancer, the tumor is gradually enlarged, invading the chest wall tissue and even compressing the lung and visceral pleura, affecting the reabsorption of fluid and protein, resulting in the loss of pleural effusion

Third: the fluid is produced from parietal pleura and absorbed by visceral pleura. It circulates continuously and is in dynamic equilibrium. The volume of fluid remains constant. When something happens that affects the pleura, whether it is the parietal pleura that produces lung cancer pleural effusion or the visceral pleura that absorbs lung cancer pleural effusion at a different rate, the pleural fluid will increase, which is called pleural effusion. If the symptoms of pleural effusion are not treated in time, it will cause serious clinical symptoms, and even cause tumor metastasis like parietal pleura.

matters needing attention

It can be seen that there are probably three reasons for lung cancer to produce bloody pleural effusion. Generally speaking, as the tumor increases, it will compress other lung tissues and cells at the same time, which will affect the reabsorption of certain substances. After a long time, bloody pleural effusion will naturally form.