Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The carina is not well delineated . The tip probably lies approximately 2 .3 cm above the carina . An orogastric tube is present and extends beneath the diaphragm off the film . Other NG type tube is seen extending beneath diaphragm , off film . A left subclavian central line tip overlies the distal SVC . No pneumothorax is detected . Cardiomediastinal silhouette is probably unchanged allowing for technical differences and lower inspiratory volumes . There is upper zone redistribution and mild diffuse vascular blurring , consistent with CHF , similar to the ___ . Again seen are small bilateral effusions , possibly minimally improved .
    OUTPUT:
    
Lines and tubes as described . CHF , similar to prior . Bibasilar effusions are probably slightly improved . Associated bibasilar atelectasis again noted .