Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates mildly hyper expanded lungs with bibasilar atelectasis . Left lung is clear . Faint heterogeneous opacity within the right middle lobe . Again seen is subtle blunting of the left costophrenic angle likely related to scar versus small pleural effusion . No right pleural effusion . No pneumothorax . Heart size , mediastinal contour , and hila are otherwise unremarkable . Limited assessment of the upper abdomen is within normal limits .
    OUTPUT:
    
1 . New right middle lobe opacity concerning for pneumonia or aspiration pneumonia . 2 . Persistent blunting of left costophrenic angle likely related to scar or small chronic pleural effusion . 3 . Mildly hyperinflated lungs .