Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal contours are normal . There is a moderate left pleural effusion , increased in size compared to the prior exam from ___ with adjacent compressive atelectasis . There is no evidence of a pneumothorax . A venous stent is again seen , unchanged in position . There is mild right basilar atelectasis . A venous stent is again seen , unchanged in position . The visualized osseous structures are unremarkable . There is a small right pleural effusion .
    OUTPUT:
    
Moderate left pleural effusion increased in size compared to the prior exam with an adjacent opacity which may be secondary to atelectasis ; however , a superimposed infectious process can not be excluded .