Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC line tip near cavoatrial junction . There is small left pleural effusion , stable . Mildly worsened left basilar opacity , consider infection in the appropriate clinical setting . Postoperative changes spine , with hardware in place stable . Very shallow inspiration . Right lung is clear . Old left rib fractures . Normal heart size , pulmonary vascularity
    OUTPUT:
    
Small left pleural effusion . Left basilar opacity has increased , likely atelectasis , consider infection in the appropriate clinical setting