Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates moderately well inflated lungs with mild right lower lobe atelectasis . No pleural effusion or pneumothorax . Mild elevation of the right hemidiaphragm is stable . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the upper abdomen is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process . No definite pneumonia . No pleural effusion .