Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A moderate left pleural effusion is not significantly changed . Left mid to lower lung opacification is also unchanged , likely atelectasis . Assessment of the left pleural catheter positioning is limited on the provided radiograph . There is no right pleural effusion . The right lung is clear . The heart size is difficult to assess but is likely mildly enlarged . The mediastinal contours are unchanged . There is no pneumothorax . Suture chain is seen within the right upper lung . There is a left - sided Port - A - Cath .
    OUTPUT:
    
Unchanged moderate left pleural effusion and adjacent presumed atelectasis . Assessment of the left - sided pleural catheter positioning is limited . Further evaluation of the left lung process and pleural catheter could be performed with dedicated PA and lateral radiographs .