Pleural effusion is when fluid collects in the area between the lungs and the chest wall. This area is called the pleural cavity. Because of the fluid buildup, the lungs may not be able to expand completely. This can make it hard to breathe.
ByHealthwise StaffPrimary Medical ReviewerE. Gregory Thompson, MD - Internal MedicineAdam Husney, MD - Family MedicineHasmeena Kathuria, MD - Pulmonology, Critical Care Medicine, Sleep Medicine