Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiograph demonstrates unremarkable mediastinal and hilar contours . Heart size is top normal . The lung volumes are low . Lungs are clear . No overt pulmonary edema No pleural effusion or pneumothorax is present . No displaced rib fracture is identified .
    OUTPUT:
    
No acute intrathoracic process . Boderline heart size but no florid failure .