Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left lung volume has decreased in the interim , now with increased collapse in left lower lobe . Increased opacity in left lower lobe , reflecting atelectasis and pneumonia have progressed . A left pleural effusion is small . Right lung volume remains overall unchanged . Right lower lobe horizontal opacity similar in appearance , again likely reflecting atelectasis . Heart size is top normal , unchanged . No pneumothorax or edema . Enteric tube tip enters into the left upper quadrant and its tip is not seen .
    OUTPUT:
    
1 . Left lower lobe pneumonia with progressive volume loss and small left effusion . 2 . Right lower lobe atelectasis , unchanged .