Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tortuous ascending and descending thoracic aorta alter the cardiomediastinal contour . Heart size is enlarged , although stable from prior examinations . The trachea is mildly shifted towards the right , likely secondary to enlargement of the aortic arch , although patient positioning is suboptimal . Lungs are relatively hypoinflated with bibasilar atelectasis . No large pleural effusion or pneumothorax . No definite focal pneumonia . There are moderate degenerative changes throughout both glenohumeral joints .
    OUTPUT:
    
Hypoinflated lungs and mild cardiomegaly , with bibasilar atelectasis , but no definite pneumonia .