Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest tube is grossly unchanged in position . There is a persistent small left apical pneumothorax , grossly unchanged from prior . There is lucency projecting over the left lateral hemi thorax with an air - fluid level . Small left - sided pleural effusion is unchanged . The right lung is grossly clear . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Small left apical pneumothorax with an air - fluid level laterally .