Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . There is a small left pleural effusion with bibasilar opacities which are most compatible with mild atelectasis . There is no overt edema . The heart is within normal limits of size . The mediastinal contour is stable with atherosclerotic calcifications along the aortic knob . There is no pneumothorax . Bony structures are intact .
    OUTPUT:
    
Small left pleural effusion with mild bibasilar atelectasis . No overt signs of edema .