Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear . Tiny right apical pneumothorax is without substantial interval change . A small right pleural effusion appears decreased in size compared to the prior exam . There are no acute osseous abnormalities .
    OUTPUT:
    
Unchanged tiny right apical pneumothorax . Decreased size of small right pleural effusion .