Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right upper lobe paramediastinal mass is again seen . Right - sided volume loss with right basilar opacity is again seen . There is a small right pleural effusion . Known pneumothorax seen on CT scan from earlier the same day is seen with pleural reflection visualized below the posterior right third rib . The left lung is clear . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
1 . Small right pneumothorax . 2 . No significant change of right paramediastinal mass and right basilar ground - glass opacities as on recent chest CT . 3 . New small right pleural effusion since prior chest CT .