Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval placement of a left subclavian central line , the tip projecting over the mid to distal SVC . Subclavian catheter tip extends over the distal SVC . The tip of the endotracheal tube projects over the mid thoracic trachea . The gastric tube extends into the stomach . Grossly unchanged layering bilateral pleural effusions with subjacent atelectasis . No pneumothorax identified . The size of the cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Interval placement of a left subclavian central line , the tip projecting over the mid to lower SVC . Unchanged bilateral layering pleural effusions with overlying atelectasis .