Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The endotracheal tube is appropriately positioned , ending 6 cm above the level of the carina . A right subclavian central venous catheter ends in the low SVC . An enteric catheter courses below the level of the diaphragm and out of the field of view inferiorly . There is central pulmonary vascular congestion without frank interstitial pulmonary edema . Subsegmental left retrocardiac atelectasis is not significantly changed . Mild elevation of the right hemidiaphragm is not significantly changed . Mild cardiomegaly is similar in appearance . The mediastinal contours are unchanged . There are no pleural effusions . No pneumothorax is seen .
    OUTPUT:
    
1 . Appropriately positioned lines and tubes . 2 . Unchanged subsegmental left retrocardiac atelectasis and mild cardiomegaly .