A Patient with Lung Cancer Develops Pleural Effusion

A patient with lung cancer develops pleural effusion. Which of the following explanations by the nurse would help the patient understand this problem?

A) "You have large amounts of fluid collecting in your airways because of the lung cancer."
B) "Pus has developed in your alveoli that must be removed to improve your breathing."
C) "Fluid has collected in the space between your lungs and the sac surrounding your lungs."
D) "Fluid in your pericardial sac places pressure on your lungs, making it difficult to breathe."