Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post coronary artery bypass graft surgery . The heart is again mild to moderately enlarged . There is a similar patchy opacity in the left lower lobe which does not appear changed . Streaky right middle lobe opacification suggests minor atelectasis or scarring . Similarly , right lateral rib deformities with pleural thickening , also probably chronic , appear similar as well . Post-traumatic findings involving the right clavicle are likewise stable .
    OUTPUT:
    
No evidence of acute disease .