Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There is no evidence of pulmonary edema . Subtle bibasilar opacities are consistent with pneumonia , as demonstrated in the images of the lower lungs on the abdomen CT from ___ . No pleural effusion or pneumothorax is seen .
    OUTPUT:
    
Bibasilar pneumonia , has not worsened since ___ .