Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette and pulmonary vasculature are unremarkable . There is mild obscuration of the left heart border . There are minimal bibasilar opacities likely atelectasis . No definite mass is identified . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No definite mass identified . Bibasilar opacities are likely atelectasis