Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , there is homogeneous opacity in the left hemithorax with a small area of air and significant volume loss , likely due to complete left upper and lower lobe collapse with large pleural effusion replacing the area . Discontinuation of air column is seen in the left main bronchus , proximal to the bronchial stent . Shift of mediastinum to the left is seen . Heart size is unable to be evaluated . The right lung and right hilum appear normal . No significant right pleural effusion is seen . Chest tube is seen in the left hemithorax . Left bronchial stent appears grossly unchanged in location .
    OUTPUT:
    
Complete collapse of left upper and lower lobe , replaced with pleural effusion .