Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP semi-upright chest radiograph was obtained . The patient has taken a better inspiration on the current study . The lungs are clear . There is no focal consolidation , effusion , or pneumothorax . Moderate cardiomegaly is unchanged .
    OUTPUT:
    
Clear lungs on the current study obtained with better inspiratory effort .