Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is continued mediastinal shift to the left due to volume loss in the left lower lobe . The left upper lobe is aerated . There is a stable small right pleural effusion and right basilar atelectasis . Aortic calcifications are noted . The cardiomediastinal silhouette is obscured due to bibasilar opacities .
    OUTPUT:
    
1 . Marked volume loss in the left lower lobe resulting in mediastinal shift to the left , unchanged since ___ 2 . Stable right pleural effusion and atelectasis .