Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small left hydro pneumothorax appears grossly stable in size , allowing for differences in technique . Cardiomediastinal hilar contours are stable . The aorta is tortuous . Bibasilar opacities appear unchanged , and again may reflect atelectasis or contusion . Nondisplaced fracture through the lateral left seventh rib .
    OUTPUT:
    
1 . No significant interval change in size of small left hydropneumothorax . 2 . Heterogeneous bibasilar opacities again may reflect atelectasis or contusion .