Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates low lung volumes . Midline sternal wires are intact and well aligned . The cardiac silhouette is borderline enlarged . In comparison to the prior examination , there is mild right hilar prominence . There is minimal prominence of the pulmonary vasculature as well , which may be rib suggestive of mild pulmonary edema in the appropriate clinical context . No definite focal consolidation is identified .
    OUTPUT:
    
Pulmonary vascular congestion . No focal consolidation identified .