Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unchanged . Heart size remains mildly enlarged . There is no pulmonary vascular congestion . Lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process .