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 ...

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 ...

A pericardial effusion is the buildup of excess fluid between the heart and the sac surrounding the heart, known as the pericardium. Pericardial effusion is the buildup of an excess amount of fluid in ...