Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are stable . Left lower lobe collapse with adjacent bibasilar opacities are unchanged from prior study . Trach tube is in appropriate position . There is no pleural effusion or pneumothorax . A PEG tube is seen projecting over the left upper quadrant . Compared to the CT examination , there is no air in the stomach . Therefore , visualization of the borders of the stomach is not possible .
    OUTPUT:
    
Stable left lower lobe collapse and bibasilar opacities . Borders of the stomach can not be evaluated due to lack of air in the stomach .