Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left chest tube has been placed since 8 hr prior . Left hemopneumothorax is decreased . Right mediastinal shift is less . Left hemidiaphragm is elevated , which could be due to left lung base atelectasis or diaphragm injury . Right lung base opacity could be due to atelectasis or aspiration . Borderline enlarged cardiomediastinal silhouette is similar to prior . Pleural margin thickening at the left lung apex is probably due to hemothorax . There are multiple left rib fractures .
    OUTPUT:
    
1 . Left chest tube has been placed since 8 hr prior . Left hemopneumothorax is decreased . 2 . Left hemidiaphragm is elevated , which could be due to left lung base atelectasis or diaphragm injury . 3 . Right lung base opacity could be due to atelectasis or aspiration .