Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . The right costophrenic angle is excluded on this study . There is new right mid lung opacity . There is also new extensive retrocardiac opacity in the left lower lobe and patchy left mid lung opacity likely within the lingula . A pleural effusion is suspected on the left . No pneumothorax . Osseous structures are unremarkable . There is calcification of the aortic knob . No radiopaque foreign body .
    OUTPUT:
    
New multifocal opacities worrisome for pneumonia with a suspected small left - sided pleural effusion .