Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest ___ inspiratory lung volumes . Bibasilar atelectasis or scarring is unchanged . Peribronchial opacification at the right lung base may represent atelectasis or fibrosis . The lungs are otherwise clear without pleural effusion , focal consolidation or pneumothorax . The pulmonary vasculature is not engorged . The cardiac silhouette is normal in size . The mediastinal and hilar contours are stable .
    OUTPUT:
    
Bibasilar atelectasis and / or scarring greater on the right than the left in the setting of low lung volumes . No pneumonia .