Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Subpleural consolidation in the left upper lobe has minimally improved since the earlier study of ___ . No pleural effusion or pneumothorax is detected . The cardiomediastinal and hilar contours are normal . No obvious displaced rib fractures are seen .
    OUTPUT:
    
Mild improvement in the left upper lobe subpleural consolidation , which may represent pneumonia or pulmonary hemorrhage .