Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . A coarse ill - defined opacity at the right lung base has improved since the ___ chest radiograph . There is no pneumothorax , new focal consolidation , or pleural effusion . The heart size remains normal . The aorta is heavily calcified and tortuous . Hilar and mediastinal contours remain within normal limits .
    OUTPUT:
    
Right basilar opacity from the ___ examination is now less distinct . No new focal consolidation detected .