Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Very shallow inspiration . Left basilar opacity , atelectasis versus pneumonitis , more prominent . Resolved previously seen bilateral perihilar opacities . Mild interstitial prominence , may represent edema , more prominent . No effusion . Probably chronic left lateral ninth rib fracture . Multilevel mild vertebral body height loss , stable . Mild thoracolumbar curve . .
    OUTPUT:
    
Left basilar opacity , atelectasis versus pneumonitis ; very shallow inspiration . Mild interstitial prominence , may represent edema . No effusion .