Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Comparison with ___ . Previously seen small left pneumothorax has decreased with small residual pneumothorax along the left lower chest . Left lateral chest wall subcutaneous emphysema slightly increased . The lungs are clear without focal consolidation . No pleural effusion is seen . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Residual small left pneumothorax along the lower chest . Slightly increased subcutaneous emphysema along the left lateral chest wall .