Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates mildly hypoinflated clear lungs . No right pleural effusion . Trace left pleural effusion . No pneumothorax . No focal opacity . Heart size , mediastinal contour , and hila are unremarkable . Left axillary or breast clips are present . Limited assessment of the upper abdomen is unremarkable and visualized osseous structures are within normal limits .
    OUTPUT:
    
No pneumonia or pneumothorax .