Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size remains moderately enlarged with a large hiatal hernia re - demonstrated . The mediastinal and hilar contours are stable . Calcifications projecting over the left upper lung field are unchanged , and demonstrated on the prior chest CTA to be within the left upper anterior chest wall . Patchy opacity is noted within the right lung base , with minimal blunting of the right costophrenic sulcus suggestive of a trace pleural effusion . No pulmonary vascular congestion is present . Hyperinflation of the lungs is noted . The patient is status post left mastectomy . No acute osseous abnormalities are seen .
    OUTPUT:
    
Patchy right basilar opacity with minimal blunting of the right costophrenic angle may be suggestive of atelectasis or infection with a trace right pleural effusion . Large hiatal hernia . Unchanged calcifications within the left upper anterior chest wall , better demonstrated on the prior CT .