Overview
Pleural effusion refers to abnormal accumulation of fluid in the pleural space (between the lung and chest wall). There are many possible causes including infections, tuberculosis, heart disease, malignancy and inflammatory disorders.
Common Symptoms
- Breathlessness (may be progressive)
- Chest heaviness or discomfort
- Dry cough
- Reduced breath sounds on examination
- Sometimes fever if infection is the cause
When to Consult a Pulmonologist
Consult if you develop progressive breathlessness, chest heaviness, or if a pleural effusion has been identified on chest imaging.
How We Diagnose It
Evaluation includes chest X-ray, CT chest, ultrasound and diagnostic pleural fluid aspiration to determine the cause.
Treatment Approach
Treatment depends on the underlying cause. Therapeutic aspiration (thoracentesis) may relieve breathlessness. Specific treatment targets the underlying cause. Chest drain may be needed in selected cases.

