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Pleural effusion (say "PLER-uhl eh-FYOO-zhun") is the buildup of fluid in the space between tissues lining the lungs and chest wall (pleural space). Because of the fluid buildup, the lungs may not be able to expand completely, and that can make it hard for you to breathe. The lung, or part of it, may collapse. How is...
Thoracentesis is a procedure to remove fluid from the space between the lungs and the chest wall called the pleural space. It is done with a needle (and sometimes a plastic catheter) inserted through the chest wall. Ultrasound pictures are often used to guide the placement of the needle. This pleural fluid may be sent...