- Shortness of breath
- Chest pain, especially when breathing in deeply (This is called pleurisy or pleuritic pain.)
- Fever
- Cough
A wide range of things can cause a pleural effusion. Some of the more common ones are:
- Dysfunction of other organs - This usually happens if you have congestive heart failure, when your heart doesn't pump blood to your body properly. But it can also come from liver or kidney disease, when fluid builds up in your body and leaks into the pleural space.
- Cancer - Usually lung cancer is the problem, but other cancers that have spread to the lung or pleura can cause it, too.
- Infections - Some illnesses that lead to pleural effusion are pneumonia or tuberculosis.
- Autoimmune conditions - Lupus or rheumatoid arthritis are some diseases that can cause it.
- Pulmonary embolism - This is a blockage in an artery in one of your lungs, and it can lead to pleural effusion.



