Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided internal jugular line terminates in low SVC . Lung volumes are again low . Right hemidiaphragm remains elevated . Persistence of a small left - sided pleural effusion and bilateral atelectasis . Retrocardiac opacity is slightly improved from the prior study .
    OUTPUT:
    
No overt evidence of pneumonia , but left pleural effusion is present .