Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval placement of right - sided pigtail catheter projecting over the right mid thorax . There is now a small residual pneumothorax identified at the right lung apex . Otherwise , there is no change . Left apical calcified granuloma is better seen on the current exam . The cardiomediastinal silhouette is within normal limits . Right posterior ninth rib fracture is old as is a left posterolateral ninth rib fracture .
    OUTPUT:
    
Interval placement of a right - sided pigtail catheter . Right - sided pneumothorax is now small .