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Pleural effusion occurs when fluid collects in the pleural cavity—the area between the lungs and the chest. Fluid buildup may cause abnormal pressure on the lungs.
| By | Healthwise Staff |
| Primary Medical Reviewer | E. Gregory Thompson, MD - Internal Medicine |
| Specialist Medical Reviewer | Robert L. Cowie, MB, FCP(SA), MD, MSc, MFOM - Pulmonology |
| Last Revised | July 15, 2011 |