Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of right - sided chest tube which is in appropriate position with new small anterior right pneumothorax and right - sided subcutaneous emphysema . Bilateral perihilar opacities likely represent a combination of vascular crowding and vascular congestion . Interval increase in heterogeneous opacity within the left lower lobe is most consistent with a pulmonary contusion however differential includes superimposed infection and aspiration . No large pleural effusion . Again seen are multiple right - sided rib deformities better assessed on outside hospital CT involving the right upper posterior ribs . No definite left - sided rib fracture seen .
    OUTPUT:
    
1 . Interval placement of right - sided chest tube in appropriate position with new small anterior right pneumothorax and right - sided subcutaneous emphysema . 2 . Vascular crowding and mild vascular congestion . 3 . Increasing left lower lobe heterogeneous opacity likely represents pulmonary contusion however differential includes superimposed infection and aspiration . Clinical correlation is recommended .