Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy . The heart is normal in size . There is moderate tortuosity of the aorta as well as calcification along the arch . The mediastinal and hilar contours appear unchanged . Mild relative elevation of the right hemidiaphragm is stable . There is no definite pleural effusion or pneumothorax . Patchy left basilar opacities , probably in the left lower lobe appear similar and suggest minor atelectasis or scarring with no definite superimposed process . The bones appear probably demineralized .
    OUTPUT:
    
No evidence of acute disease . Similar patchy left basilar opacity suggestive of atelectasis .