Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest , PA and lateral radiographs exclude the right costophrenic angle from view . Within this limitation , cardiomediastinal and hilar contours are unremarkable . Lungs are clear . No pleural effusion or pneumothorax identified . No displaced rib fractures identified .
    OUTPUT:
    
No acute cardiopulmonary process .