The pleura is a thin membrane that covers and cushions the lungs. Pleural fluid reduces friction between the lungs and chest during breathing. Pleurisy is inflammation of the pleura, often caused by ...

Pleural effusion, also called water on the lung, happens when fluid builds up in the space between your lungs and chest cavity. You may have symptoms, such as chest pain, depending on the cause. Thin ...

Pleural effusion, sometimes called water on the lung, is a buildup of fluid between the lungs and the chest cavity. It can result from pneumonia, heart failure, cancer, and other conditions. Pleural ...