Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low , causing bronchovascular crowding . There is no focal consolidation or pneumothorax . There may be trace interstitial edema . There may be a trace left effusion . Heart size is top - normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Potential mild interstitial edema . Bilateral pleural effusions are not necessarily seen but can not be entirely excluded .