Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , the lung volumes have increased . Left lower lobe atelectasis has improved . There is new small loculated pleural effusion in the left apex , in the prior pneumothorax space . No basal pleural effusion is seen . Previously described interstitial lung disease is not significantly changed . Borderline heart size is unchanged . The mediastinal and hilar contours are unchanged . There has been interval resolution of subcutaneous gas .
    OUTPUT:
    
Slightly improved lung volume . New small loculated pleural effusion at the left apex .