A pleural friction rub is a raspy breathing sound caused by inflammation of the tissues around your lungs. The sound is usually “grating” or “creaky.” It’s also been compared to the sound of walking ...

Your lungs are protected by two membranes, called the pleurae. The visceral pleura covers the lungs, and the parietal pleura lines the inside of your rib cage. A small amount of space between the two ...

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 ...