Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right - sided moderate pneumothorax is increased in size measuring 74 mm in the craniocaudal plane at the right lung apex . The lateral portion is stable measuring 24 mm . Unchanged subcutaneous emphysema in the right lateral chest wall . The left lung is clear . The cardiac silhouette is stable . Mediastinal shift is difficult to assess in the setting of leftward patient rotation and scoliosis . No pleural effusions .
    OUTPUT:
    
Interval increase in size of the apical aspect of the right pneumothorax .