Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes leading to crowding of the bronchovascular structures . A new linear airspace opacity in the left lower lung is noted likely atelectasis . Small left pleural effusion is minimally changed . Bibasilar atelectasis is noted . There is no pneumothorax or pulmonary edema . Mild cardiomegaly is present . The known nondisplaced rib fractures on the left side seen on the prior CT are not well seen on these radiographs .
    OUTPUT:
    
Bibasilar atelectasis and new linear left lower lobe airspace opacity which may atelectasis or developing pneumonia . Stable , small left pleural effusion .