Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A pigtail catheter now overlies the left pleural space . There has been interval reexpansion of the left lung with a now small left pneumothorax , significantly decreased from comparison study . Right basilar opacity may be due to atelectasis . Superiorly the lungs are clear . Hilar structures and cardiomediastinal silhouette is normal .
    OUTPUT:
    
1 . Pigtail catheter now overlies the left pleural space . 2 . Interval re-expansion of the left lung and small residual left pneumothorax , significantly decreased in size from chest radiograph 1 hour prior .