Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval removal of a left - sided pigtail catheter . A tiny left apical pneumothorax is essentially unchanged from the prior examination . There is no evidence of focal consolidation , pleural effusion , or frank pulmonary edema . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
Status post left pigtail catheter removal with a stable tiny left apical pneumothorax .