Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right pneumothorax has slightly decreased in size . There is no evidence of tension . Residual small right pleural effusion is unchanged . There is unchanged appearance of the right paramediastinal mass and right lower lung opacity . The left lung is clear .
    OUTPUT:
    
Slight decrease in size of right pneumothorax with no evidence of tension .