Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild effacement of the right cardiac border and faint opacification within the right lower lobe , which could relate to resolving / known pneumonia , however recent radiographs are unavailable for comparison . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Mild right lower lobe opacity reflecting either resolving or evolving pneumonia . No effusions .