Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Sternotomy with valve prosthesis . Endotracheal tube tip is 4 cm above carina . Right IJ central line tip is near cavoatrial junction . Cardiac pacemaker . There is worsening of left basilar opacity . Left costophrenic angle is not fully seen . No pneumothorax . Shallow inspiration accentuates heart size , pulmonary vascularity . Pulmonary vascularity has mildly improved . Improved right basilar , perihilar opacities . Right shoulder arthroplasty .
    OUTPUT:
    
Worsened left basilar opacity , may represent atelectasis , consider pneumonitis in the appropriate clinical setting . Pulmonary vascularity has mildly improved .