Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to chest radiograph from 1 day prior , worsening atelectasis of the right middle and right lower lobe with partial collapse . Retrocardiac and left lower lobe basilar opacities also slightly worsened . No pulmonary edema . No pneumothorax or substantial effusion .
    OUTPUT:
    
Worsening right middle and bilateral lower lobe opacities may reflect increasing collapse / atelectasis .