Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . The pulmonary vascularity is normal in the lungs are clear without focal consolidation . No large pleural effusion or pneumothorax is identified with minimal biapical pleural thickening seen . There is minimal blunting of the left costophrenic angle posteriorly , which could reflect a tiny effusion . There are no acute osseous abnormalities .
    OUTPUT:
    
Minimal blunting of the left costophrenic sulcus posteriorly may suggest a tiny effusion . Otherwise no acute cardiopulmonary abnormality .