
Exudative pleural effusion
Exudative pleural effusion occurs when fluid builds up in the space between the lungs and chest wall due to increased factual leakage caused by inflammation, infection, or injury in nearby tissues. Unlike simple fluid buildup from heart failure or low protein levels, exudative effusions are rich in proteins and flow-inducing substances, indicating an underlying problem like pneumonia, cancer, or other diseases. This fluid accumulation can cause chest discomfort, shortness of breath, or cough. Diagnosing involves analyzing the fluid to identify the cause and guide appropriate treatment.