Fluid on the lung (pleural effusion)
Find out how cancer can cause fluid build up in the lungs and how it might affect you.
Where the fluid builds up
The outside of the lung is protected by 2 sheets of tissue. They are called pleural membranes (pleura). The space between the 2 layers of tissue (pleura) is called the pleual space.
The pleura gets inflamed by cancer cells and this makes fluid. The fluid takes up space where your lungs should be. It stops your lungs from expanding fully. So you have to take shallower breaths and make more effort to breathe.
Doctors call the fluid collection a pleural effusion.
The fluid stops the lung from fully expanding when you breathe. So as it builds up, the collected fluid causes shortness of breath.
Coping
Shortness of breath from a pleural effusion can be very uncomfortable. You might also feel anxious if you have difficulty breathing.
You might find it more comfortable to sit on the edge of the bed or in an armchair. It might help to lean forward with your arms resting on a pillow on a bed table. This will allow your lungs to expand as fully as possible.
Let your doctor or nurse know if you find it difficult to cope. They will do all they can to help relieve your symptoms and support you. Let family and friends know how you are feeling and accept any offers of help and support.
