Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: All lines and tubes are unchanged in positioning . There are persistent multifocal opacities on the right , and at the left base , which may have slightly increased compared to the previous examination . The pulmonary vasculature is normal . The cardiomediastinal silhouette is stable . Small pleural effusions are difficult to exclude . There is no pneumothorax .
    OUTPUT:
    
1 . Unchanged position of lines and tubes . 2 . Multifocal bilateral parenchymal opacities , which may have slightly increased compared to prior .