Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy . There has been prior aortic valve replacement . The cardiac , mediastinal and hilar contours appear unchanged . There is a new diffuse mild - to - moderate interstitial abnormality most suggestive of congestive heart failure . Streaky left basilar opacities suggest atelectasis . There are small new pleural effusions as well . The bones appear demineralized . Slight loss in height of mid - to - lower lumbar vertebral bodies appears similar . There are two moderate biconcave lower thoracic compression deformities ; the more superior , in the mid thoracic spine , appears somewhat increased . Anterior flowing osteophytes are similar along the spine .
    OUTPUT:
    
New mild - to - moderate interstitial abnormality , most suggestive of congestive heart failure .