Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of a left - sided pleural pigtail catheter . A portion of it just upstream from the pigtail appears to be kinked on this frontal view , although a lateral view may be helpful in determining the validity of that . There has been improvement of the left - sided pleural effusion with only a minimal amount of residual pleural fluid left . There is no pneumothorax . There has been improvement of the left basal atelectasis . Mild consolidation at the right costophrenic angle is also present . Otherwise , the mediastinal contours are unchanged .
    OUTPUT:
    
Status post left pleural pigtail catheter placement with improvement in pleural effusion and no pneumothorax . Residual left and persistent right atelectasis .