What should I do about pleural effusion?

Determine cause. Pleural effusions, or fluid build-up around the lungs, is not normal. Pleural effusions can arise from infection, heart failure, liver failure, malignancies or trauma. The treatment will depend on the cause. Your doctor will need to run some tests and may need to sample some of the fluid to characterize it. If there is a lot of fluid and you are symptomatic, thoracentesis may be required.
Ethiology. Need to determine the ethiology before i can tell you the treatment.