Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Rotated positioning . Left pigtail catheter has been removed . Probable small left apical pneumothorax . Again seen is patchy opacity at the left lung base , likely a combination of collapse / consolidation and pleural fluid . There is also patchy opacity at the right base , similar to prior . Slight upper zone redistribution and vascular plethora is also similar to the prior film . As before , the left hemidiaphragm is elevated .
    OUTPUT:
    
Interval removal of left pigtail catheter . Probable small left apical pneumothorax . The hydro pneumothorax seen on the ___ CT is not well appreciated radiographically . Otherwise , doubt significant interval change .