Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Extremely low lung volumes could account for opacification of the lung bases , greater on the right , due to atelectasis as well as mild engorgement of pulmonary vasculature . A small right pleural effusion can not be excluded . No pneumothorax is detected , however there is a crescent of lucency in the left diaphragmatic region that I discussed with Dr ___ ___ said pneumoperitoneum is excluded clinically . The cardiomediastinal and hilar contours are within normal limits . The trachea is midline . Partially imaged spinal fusion hardware is noted at the thoracolumbar junction .
    OUTPUT:
    
Bibasilar atelectasis . No likely pneumonia or edema . ___ ( In Hospital , On Page ) , ___ and I discussed these findings at 8 : 30 am , ___ .