What are the causes of pleural effusion?
There are many causes of pleural effusions. The following is a list of some of the major causes:
- Congestive heart failure
- Kidney failure
- Pulmonary embolism
The development of a pleural effusion occurs from fluid seeping into the pleural space, a thin area between the visceral and pleural membranes in the chest cavity, which normally contains a small amount of fluid to facilitate smooth lung movement. Fluid under pressure, malignant cells, and infectious agents can occasionally enter this space and cause it to expand with abnormal amounts of fluid and other compounds (see diagnosis section).