Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates well expanded lungs . No pleural effusion or pneumothorax . Subtle opacity projecting over the right mid lung is nonspecific and likely represents area of atelectasis . No additional focal opacity . Heart size , mediastinal contour , and hila are unremarkable . Elevation of the left hemidiaphragm on lateral projection is noted and may represent evidence of diaphragmatic injury . Limited assessment of the upper abdomen is otherwise unremarkable and visualized osseous structures are notable for diffuse osteopenia .
    OUTPUT:
    
1 . Subtle opacity projecting the right mid lung is nonspecific and likely represents focal area of atelectasis , however clinical correlation is recommended to assess for overlying infectious process . 2 . Elevation of left hemidiaphragm on lateral projection may reflect underlying diaphragmatic dysfunction .