What causes the pleural membrane to be torn?

The pleural membrane can be torn due to several factors, including trauma, such as a rib fracture or penetrating injury to the chest, which can disrupt the integrity of the pleura. Additionally, underlying medical conditions like pneumonia or lung cancer can lead to inflammation or weakening of the pleural tissue, making it more susceptible to tearing. In some cases, invasive medical procedures, like thoracentesis or chest tube placement, may inadvertently cause a rupture of the pleura.