Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bronchovascular markings are prominent . The left costophrenic sulcus is blunted as before . This appearance appears improved on the lateral view . The lungs are otherwise clear . The heart is within normal limits in size . The aorta is mildly tortuous and calcified . Mediastinal structures are stable . The bony thorax is grossly intact . Surgical clips are again projected in the anterior chest and left axilla .
    OUTPUT:
    
No active pulmonary disease . Evidence of small left effusion which may have decreased slightly in the interval .