What Are the Types of Pleural Effusion?
There are two major types of pleural effusion; transudative or exudative.
Transudative Pleural Effusions
This is a type of pleural effusion that occurs when fluid leaks into the pleural space because of elevated pressure in the blood vessels.
You may experience transudative pleural effusion if you:
- Have congestive heart failure
- Have malnutrition due to low albumin levels in the blood
- Have kidney disease
- Have cirrhosis [4]
- Have just started peritoneal dialysis
Exudative Effusions
This is a type of pleural effusion that occurs when accumulation of fluid is due to:
- Inflammation
- Infection
- Tumors
- A lung injury
Conditions that can cause this type of pleural infusion include:
- Tuberculosis [5]
- Hemothorax, when blood collects in the pleural cavity
- Inflammatory conditions, such as pancreatitis, lupus, or rheumatoid arthritis [6]
- Cancer
- Complications from heart surgery
- Chylothorax, which results from an obstruction in the lymph vessels
- Pneumonia
Certain conditions like pulmonary embolism can cause either exudate or transudate pleural effusion.