Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright image of the chest . Lung volumes are low with associated bronchovascular crowding . In addition there are increased interstitial markings and perihilar fullness consistent with mild pulmonary edema . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is unremarkable . No free air is seen under the diaphragm .
    OUTPUT:
    
Low lung volumes . There is mild pulmonary edema .