Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate sized right apical pneumothorax increased in size since the prior CT chest . There is no evidence of mediastinal shift or other signs of tension . Vertically oriented linear opacity within the medial right lung may represent scarring or possibly a displaced fissure . There is no left pneumothorax . There is blunting of the right costophrenic angle which may represent scarring or a small pleural effusion . Cardiomediastinal slight is unremarkable .
    OUTPUT:
    
1 . Moderate right apical pneumothorax , increased since ___ . No radiographic signs of tension . 2 . Probable small right pleural effusion .