Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single frontal portable radiograph of the chest was acquired . Lung volumes are slightly low . Hazy opacification of both lower lungs is at least partially attributable to overlying soft tissues . There is no focal consolidation . No pleural effusions are seen . There is no pneumothorax . The heart size is normal . The mediastinal contours are normal .
    OUTPUT:
    
No acute cardiac or pulmonary process .