Why is there water in the lungs?

Clinically, pleural effusion can be caused by many reasons, the most common is caused by lung-related diseases, possible lung-related diseases include lung infection, tuberculosis and lung malignant tumor. If you want to clarify the cause, you need to carry out relevant examinations, including chest CT examination, tuberculin test, blood routine examination, erythrocyte sedimentation, lung tumor marker examination, etc. If necessary, you also need to carry out pleural puncture to extract a small amount of pleural effusion for laboratory examination to confirm the diagnosis. If the diagnosis is caused by lung infection, you must give anti-infection treatment; if tuberculosis is caused, you must give anti-tuberculosis treatment; If lung cancer is caused, it must be given radiotherapy, chemotherapy or surgery, depending on the situation.