Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new small consolidation at the right lung base . Otherwise the lungs are clear . There is no pneumothorax or pleural effusion . There is enlargement of the right mediastinum . The heart remains moderately enlarged , and the aorta remains large and tortuous . There is abnormal contour of the left upper mediastinum which suggests an aberrant right subclavian artery , which has been present on prior studies . The osseous structures are unremarkable .
    OUTPUT:
    
1 . Right lung base early pneumonia or atelectasis . Early pneumonia is the preferred diagnosis in the appropriate clinical setting . 2 . Engorgement of the mediastinal vessels consistent with increased central venous pressure . 3 . Stable chronic cardiomegaly and enlarged aorta .