Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pigtail chest catheter is again seen . There appears to be slight improvement of aeration of the right lower lung with decrease in right lower lung atelectasis . Left PICC terminates in the upper SVC . The left lung is clear . No pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Interval increase in aeration of the right lower lung .