Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest show persistently low but improved inspiratory lung volumes with right lower lobe atelectasis . The lungs are otherwise clear without focal consolidation , pleural effusion , or pneumothorax . Haziness in the left upper lobe is likely post-operative . Prominence of the cardiomediastinal silhouette is unchanged and likely post-surgical . The cardiac silhouette is mildly enlarged with a tortuous thoracic aorta .
    OUTPUT:
    
1 . No acute cardiopulmonary pathology . 2 . Improved but persistent low inspiratory lung volumes and right lower lobe atelectasis from ___ .