Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal and hilar contours are stable demonstrating mild cardiomegaly . Mitral annular calcifications are noted . Bibasilar opacities , left greater than right are demonstrated and may represent infection or atelectasis . Lower lung volumes on the current exam results in crowding of the bronchovascular markings . The aorta is tortuous and calcified . There is no pneumothorax . There is no pleural effusion . There is marked degenerative change involving the glenohumeral joints bilaterally .
    OUTPUT:
    
Bibasilar opacities , left greater than right suggest infection or atelectasis . Mild cardiomegaly is stable .