Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and aortic valve replacement . Heart size is top normal , decreased in size compared to the previous study . The aorta is tortuous . Pulmonary vasculature is not engorged . Lungs are hyperinflated . Minimal patchy atelectasis is noted in the lung bases without focal consolidation . Small bilateral pleural effusions are likely present . No acute osseous abnormalities detected .
    OUTPUT:
    
Minimal bibasilar atelectasis and probable trace bilateral pleural effusions .