Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The hilar and mediastinal contours are within normal limits . There is mild central pulmonary vascular congestion and mild edema predominantly at the lung bases . There is no pleural effusion , focal consolidation , or pneumothorax .
    OUTPUT:
    
Mild pulmonary edema and central vascular congestion . No pleural effusion .