Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Enteric tube traverses the midline . Left PICC line ends in the mid SVC . Surgical hardware in the thoracic spine projects over the mid thorax and limits evaluation of underlying structures . Aeration of the lungs has improved but lung volumes remain low . Bilateral atelectasis persists . No definite pleural effusion . The heart is normal in size , unchanged . Minimal bilateral edema . No pneumothorax . Opacity projecting over the right upper lung likely reflects prior rib injury . Gaseous distention of the colon in the left upper quadrant is similar to previous exam .
    OUTPUT:
    
Improved aeration lungs with residual minimal edema .