Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new small left pleural effusion . Low lung volumes has caused pulmonary vascular crowding and bibasilar atelectasis . Lung fields are otherwise clear . There is no pneumothorax . The hilar and cardiomediastinal contours are normal . A nasogastric tube terminates within the stomach .
    OUTPUT:
    
New small left pleural effusion . If the patient has signs of infection , a LLL or lingular pneumonia would be obscured by the effusion .