Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate left pleural effusion , similar to multiple recent studies . Left basilar opacification is similar to the prior exam , likely atelectasis , but infection can not be excluded . There is mild pulmonary vascular congestion and cardiomegaly . There is no pneumothorax .
    OUTPUT:
    
Mild pulmonary vascular congestion , cardiomegaly , and a moderate left pleural effusion . Persistent left basilar opacification may reflect compressive atelectasis but infection is not excluded .