Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Hyperexpansion of the left upper lobe and leftward mediastinal shift are explained by recurrent left lower lobe collapse , little changed from prior chest radiographs dating back to ___ . Small pleural effusions have increased . There is no focal consolidation , pneumothorax , or pulmonary edema . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
1 . Recurrent left lower lobe collapse . 2 . Small pleural effusions , increased .