Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are reduced . The cardiac silhouette size appears normal . The aortic arch is calcified . Mediastinal contours are unremarkable , and there is no evidence of pulmonary vascular congestion . Streaky bibasilar airspace opacities appear slightly worse compared to the prior exam , and concerning for aspiration pneumonia and / or atelectasis . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities are present .
    OUTPUT:
    
Slight interval worsening of bibasilar airspace opacities reflective of aspiration pneumonia and / or atelectasis .