2 doctors weighed in:

What causes fluid behind the lungs?

2 doctors weighed in
1 doctor agrees

In brief: A number of things

When fluid accumulates in the spaces around the lungs (pleural spaces), this is called a pleural effusion.
There are a number of causes for pleural effusions. One cause is heart failure. When the heart does not work well, its pumping action is decreased and fluid can back up into the lungs and the spaces around the lungs. Another cause might be inflammation of the lungs (as with pneumonia).

In brief: A number of things

When fluid accumulates in the spaces around the lungs (pleural spaces), this is called a pleural effusion.
There are a number of causes for pleural effusions. One cause is heart failure. When the heart does not work well, its pumping action is decreased and fluid can back up into the lungs and the spaces around the lungs. Another cause might be inflammation of the lungs (as with pneumonia).
Dr. Charles Sturgis
Dr. Charles Sturgis
Thank
Get help from a real doctor now
Dr. Aaron Milstone
Board Certified, Internal Medicine - Pulmonology
24 years in practice
1M people helped
Continue
111,000 doctors available
Read more answers from doctors