Pleural effusion must be cancer?

The causes of pleural effusion include infectious diseases, heart failure, hypoproteinemia, autoimmune diseases, malignant tumors, etc., and comprehensive examination and evaluation are needed to determine the cause and take appropriate treatment. Pleural effusion is not necessarily cancer. There are many causes of pleural effusion. The following are some common causes: 1. Infectious diseases: Such as pneumonia, tuberculosis, pleurisy, etc., can lead to pleural effusion. 2. Heart failure: heart failure, venous return blocked, can lead to pleural effusion. 3. Hypoproteinemia: malnutrition, cirrhosis, etc. can lead to hypoproteinemia, resulting in pleural effusion. 4. Autoimmune diseases: such as systemic lupus erythematosus, rheumatoid arthritis, etc. can lead to pleural effusion. 5. Malignant tumors: lung cancer, breast cancer, esophageal cancer and other malignant tumors can be transferred to the pleura, resulting in pleural effusion. 6. Other causes: such as chest trauma, drug side effects, etc. can also cause pleural effusion. Therefore, if pleural effusion is found, further examination is needed, such as chest CT, pleural effusion routine, biochemistry, tumor markers, tuberculin test, autoantibody test, etc., to determine the cause of pleural effusion. For pleural effusion caused by malignant tumor, chemotherapy, radiotherapy and other comprehensive treatment are usually required. For pleural effusion caused by other causes, treatment methods vary according to the cause. In conclusion, pleural effusion is not necessarily cancer, and comprehensive examination and evaluation are required to determine the cause and take appropriate treatment measures.