Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since 1 day prior , right lower lobe collapse has increased . Diffuse peribronchial opacities are no longer present and the lungs are otherwise clear . No pneumothorax . Heart size and cardiomediastinal silhouettes are unchanged . No pulmonary vascular congestion or pulmonary edema .
    OUTPUT:
    
Right lower lobe collapse could be caused by endobronchial obstruction Almost complete resolution of previously seen peribronchial opacities