Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Four total views , including two AP and two lateral views of the chest were viewed . The cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . The lungs are well - expanded and clear . Pulmonary vasculature is within normal limits .
    OUTPUT:
    
No acute cardiopulmonary process .