Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a persistent small right apical pneumothorax which is unchanged from prior study . There is stable right lower lobe atelectasis and a small effusion may be present if any . Left pleural effusion is unchanged . The cardiomediastinal silhouette is stable and within normal limits . The left lung is unremarkable . Right chest wall subcutaneous emphysema is reduced .
    OUTPUT:
    
Small right apical pneumothorax is unchanged . Stable right lower lobe atelectasis .