Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with earlier the same day , a right - sided pigtail catheter is now seen at the base of the right lung . No gross right - sided effusion is identified -- the previously suspected effusion is significantly decreased in size . No obvious right pneumothorax is detected . Minimal linear atelectasis at the right base is now visible , without other evidence of right base consolidation . On the left , the small effusion with underlying collapse and / or consolidation remains present . Some platelike atelectasis at the junction of the left middle lower zones is new . No pneumothorax is detected . There is upper zone redistribution , without overt CHF . The cardiomediastinal silhouette is either stable or slightly decreased in size , allowing for significant differences in degree of the patient rotation .
    OUTPUT:
    
Interval placement of right lung base pigtail catheter , with considerable improvement in the right pleural effusion . No pneumothorax detected . Minimal atelectasis at the right lung base . Persistent left effusion with underlying collapse and / or consolidation . New platelike atelectasis in the lower left lung .