Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates persistent elevation of the right hemidiaphragm with associated right lower lobe atelectasis , minimally improved since previous examination . Left lung is clear . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits .
    OUTPUT:
    
Minimal improvement in right lower lobe atelectasis with persistent elevation of right hemidiaphragm .