Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal opacity , pleural effusion or pneumothorax . Enlargement of the pulmonary vasculature may represent early vascular congestion . Mild - to - moderate cardiomegaly is stable . The aortic knob is calcified . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Early vascular congestion is new since ___ . Stable mild to moderate cardiomegaly .