Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is limited by patient rotation . Patient is status post median sternotomy and CABG . There is mild to moderate cardiomegaly which appears grossly unchanged . Atherosclerotic calcifications of the aorta are again noted . Pulmonary vasculature does not appear engorged . Lungs appear hyperinflated . Small bilateral pleural effusions are noted without focal consolidation . Patchy bibasilar opacities may reflect areas of atelectasis . No pneumothorax is identified . There is diffuse demineralization of the osseous structures with numerous compression deformities noted in the imaged thoracolumbar spine , many of which have developed in the interval and are of unclear chronicity .
    OUTPUT:
    
Limited exam . Small bilateral pleural effusions with probable bibasilar atelectasis . Multiple compression fractures throughout the imaged thoracolumbar spine have developed since ___ , but of unclear age .