Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA lateral and images of the chest . The lung volumes are low . There is mildly increased opacity in the right medial lung base , which may represent atelectasis but is concerning for pneumonia or aspiration in the right clinical setting . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable .
    OUTPUT:
    
Opacity in the right medial lung base , possibly representing atelectasis but aspiration or possibly pneumonia in the appropriate clinical setting .