Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right - sided PIC line terminates in the upper SVC . There has been interval improvement of the mediastinal vascular engorgement and of the right lower lobe atelectasis with overall improved aeration of the lungs bilaterally . There has been an interval increase in the left lower lobe atelectasis . There is a small left pleural effusion . No focal consolidation concerning for infection is identified . There is no pneumothorax .
    OUTPUT:
    
1 . Overall improved aeration of the lungs bilaterally . 2 . Interval increase in the mild left lower lobe atelectasis .