Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is complete silhouetting of the left hemidiaphragm and associated volume loss , consistent with known left lower lobe atelectasis . There is subsegmental atelectasis elsewhere . The lungs are otherwise clear . There are small bilateral pleural effusions . There is no large pneumothorax . The cardiac silhouette is enlarged , there is calcification of the aortic knob , the aortic contour itself is tortuous . Multiple bilateral healing rib fractures are noted . There is right AC joint separation . The patient is intubated , the endotracheal tube tip is positioned 3 .8 cm from the carina . An NG tube is in place , the tip of which is in the region of the stomach fundus .
    OUTPUT:
    
1 . Left lower lobe atelectasis , cardiac enlargement , standard position of support tubes . 2 . Healing multiple bilateral rib fractures .