Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged . The aorta is tortuous and calcified , similar compared to the previous exam . There is no pulmonary edema , and the hilar contours are within normal limits . Patchy opacities are noted in both lung bases , which could reflect areas of atelectasis , though infection is not completely excluded . Small bilateral pleural effusions may be present . No pneumothorax is seen . Degenerative changes of the left shoulder from noted .
    OUTPUT:
    
Bibasilar patchy opacities likely reflect atelectasis though infection can not be excluded . Probable trace bilateral pleural effusions .