Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post aortic valve replacement . The heart is mild - to - moderately enlarged . There is no pleural effusion or pneumothorax . There is mild coarsening of background interstitial markings , which may be a chronic finding ( although not confirmed since no prior studies are available ) but could be seen with mild background vascular congestion . Other possibilities include airway inflammation . No focal opacity is seen , however . The bones appear demineralized . An anterior flowing osteophyte is noted along mid thoracic vertebral bodies suggesting skeletal hyperostosis . Calcification of some of the thoracic interspaces may be associated with immobility .
    OUTPUT:
    
Status post aortic valve replacement with mild coarsening of lung markings that could be seen with mild vascular congestion , but potentially chronic , although prior studies are not available . No definite evidence for pneumonia .