Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is pulmonary vascular congestion , without frank edema , and mild distention of mediastinal veins compared to ___ . The heart is moderately enlarged . Mediastinal contours are unchanged . No pneumothorax , pleural effusion , or consolidation .
    OUTPUT:
    
Pulmonary vascular congestion , suggesting volume overload or early cardiac decompensation .