Understanding Causes and Treatment of Fluid Around the Lungs

This is a research study that follows patients who have fluid buildup around their lungs (a condition called pleural effusion). Researchers want to understand what causes this problem, how doctors in Hong Kong currently treat it, and what happens to patients after treatment. By collecting real-world information from over 1,000 patients, the study aims to help doctors make better decisions about caring for this common condition.

Fluid around the lungs can happen for many reasons — heart disease, infection, cancer, or other conditions — but doctors don't have clear local data about which causes are most common. This creates confusion about the best way to diagnose and treat it, sometimes leading to unnecessary procedures or delayed care. This study will create a registry to understand the true burden of this disease and guide better treatment practices.