Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Semi-upright frontal radiograph of the chest demonstrates an endotracheal tube in appropriate position , terminating 6 cm above the carina . An esophageal tube is also in place , which courses below the diaphragm , into the stomach and out of view . The heart is moderately to severely enlarged in size , with pulmonary vascular congestion and perihilar haze consistent with mild pulmonary edema . There is no pneumothorax . There may be a small right pleural effusion .
    OUTPUT:
    
1 . Moderate to severe enlargement of the cardiac silhouette . 2 . Mild pulmonary edema with possible small right pleural effusion .