Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomegaly is mild . No overt features of cardiac decompensation . BIBASILAR ATELECTASIS HAS NOT CHANGED APPRECIABLY SINCE ___ , CORROBORATED BY CHEST CTA AT THAT TIME . THE COULD BE A VERY SMALL RIGHT PLEURAL EFFUSION . Unfolding of the thoracic aorta with associated calcific atherosclerotic changes . Marked chest wall deformity . Cortical bony erosions of the humeri bilateral suggesting renal osteodystrophy .
    OUTPUT:
    
Mild cardiomegaly . Chronic bibasilar subsegmental atelectasis , attributable to chronic hypoventilation . Possible small right pleural effusion .