Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal chest radiograph again demonstrates the tracheostomy tube terminating approximately 2 .2 cm above the carina . The cardiac silhouette is mildly enlarged , although this may be in part due to projection . Calcifications of the aortic knob are again noted . Streaky opacities in the right base are consistent with atelectasis . The left hemidiaphragm is minimally better seen compared to ___ . Left base opacity may reflect atelectasis , although sequela of aspiration can not be excluded . No new focal consolidation identified . There is no pneumothorax . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
Bibasilar atelectasis , with minimally improved aeration of the left lower lobe . No new focal consolidation identified , although it is difficult to evaluate the left base , given the patient rotation and overlap by the cardiac silhouette over the left lower lobe .