Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower lung volumes contribute to bibasilar atelectasis as well as vascular crowding . Whether component of pulmonary edema exists are not is difficult to ascertain given the low lung volumes . No focal opacities . No pneumothorax . No pleural effusion .
    OUTPUT:
    
Low lung volumes contributing to bibasal atelectasis and vascular crowding . Consider repeat radiograph with full inspiration to rule out pulmonary edema .