Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , accounting for some vascular crowding . However , increased interstitial markings and indistinctness of the hila suggests interstitial edema and vascular congestion . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Low lung volumes with associated mild interstitial edema and vascular congestion .