Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable frontal chest radiographs demonstrate a normal cardiomediastinal silhouette and a slightly hypoinflated lungs . There is persistent opacity in the right lower lung , which may correlate with the right pleural fluid seen on the CTA chest from the same day there is no pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No pneumothorax . Persistent right lower lobe lung opacity may correspond to right pleural fluid seen on CTA chest from the same day .