Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight increase in opacity projecting over the posterior lower lungs on the lateral view is stable since the prior study and may relate to overlapping structures . No new focal consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable . Hilar contours are also stable .
    OUTPUT:
    
No significant interval change .