Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes resulting in bronchovascular crowding . Stable hazy alveolar opacities in the right perihilar region and right lung base are consistent with infection . The left lung is relatively clear . The cardiomediastinal and hilar contours are unchanged . No pneumothorax .
    OUTPUT:
    
Stable hazy alveolar opacities in the right perihilar region and right lung base are consistent with infection .