Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Small left pleural effusion is unchanged from ___ . Retrocardiac opacification is indicative of left lower lobe atelectasis . The lungs demonstrate diffuse emphysema and scattered ill defined nodules with upper lung predominance , which were seen on prior chest CT . No new focal consolidation . Heart size is normal . No pneumothorax .
    OUTPUT:
    
1 . Similar size of small left pleural effusion with adjacent left lower lobe atelectasis . 2 . Ill defined nodules in both lungs were better characterized on the recent chest CT and can be followed up in 2 months , as recommended by the chest CT report .