Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior chest radiograph from ___ , a small right apical pneumothorax is essentially unchanged in size . Right - sided chest tubes remain in unchanged position . Increased opacity at the right lung base is likely related to a small pleural effusion . There is redemonstration of a stable right upper lung opacity . The left lung is clear . A right PICC line terminates in the distal SVC .
    OUTPUT:
    
Unchanged small right apical pneumothorax .