Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left lower lobe basilar opacity may represent atelectasis , but given the clinical history , possible aspiration or infection is concerning . The right lung is clear . Mild lateral shifting of the apex of the left hemidiaphragm apex may indicate a subpulmonic pleural effusion . The heart size is normal . The right Port -a - Cath is in unchanged position . No pneumothorax or pulmonary edema .
    OUTPUT:
    
1 . Left lower lung opacity is concerning for aspiration or infection . 2 . Mild lateral shift of the left hemidiaphragm apex may indicate a subpulmonic pleural effusion .