Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph . The lungs are low in volume with enlargement of the pulmonary vasculature and increased interstitial markings in keeping with mild pulmonary edema . There is no pleural effusion , focal consolidation or pneumothorax . The heart is stably enlarged with normal mediastinal contours .
    OUTPUT:
    
Mild pulmonary edema .