Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right PICC line tip near cavoatrial junction . Very shallow inspiration . Increased heart size , similar . Increased lower lung opacities , atelectasis likely , consider pneumonitis . Few strands of basilar fibrosis . Sternotomy , valve prosthesis . Cardiac defibrillator . Thoracolumbar curve .
    OUTPUT:
    
Increased bibasilar opacities in the setting of shallow inspiration , likely atelectasis .