Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Lung volumes are low and there is mild stable right hemidiaphragmatic elevation . There is subsegmental right and left lower lung atelectasis without definite signs of pneumonia , CHF , pleural effusion , or pneumothorax . Overall , cardiomediastinal silhouette appears stable with top normal heart size . Bony structures are intact . Clips in the right upper quadrant noted .
    OUTPUT:
    
Top normal heart size with bibasilar subsegmental atelectasis . Otherwise , normal .