symptoms of fluid around lungs
Pleural effusion, also called âwater on the lung,â is an excessive buildup of fluid between your lungs and chest cavity. Thereâs always a small amount of liquid inside your lungs. This fluid works to coat the membranes (pleura) that line the outside of your lungs and lubricate the chest cavity to aid in breathing. Certain medical conditions can cause this fluid to build up between the chest cavity and your lungs.