What does No pleural effusion or pheumothorax mean?

"No pleural effusion or pneumothorax" means that there is no accumulation of fluid (pleural effusion) or air (pneumothorax) in the pleural space surrounding the lungs. This is a positive finding, indicating that the lungs are likely to be functioning normally without any complications that could impair breathing or lead to respiratory distress. In medical imaging, such as a chest X-ray or CT scan, this result suggests a healthy pleural environment.