Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube tip approximately 6 .5 cm above the carina at the level of the mid clavicular heads . NG tube extends beneath the diaphragm , off the film . Right IJ central line tip is in the distal most SVC , adjacent to the SVC / RA junction . No pneumothorax is detected . There is prominence of the cardiomediastinal silhouette unchanged . There is upper zone redistribution and diffuse vascular blurring , consistent with CHF . There is increased retrocardiac density , consistent with left lower lobe collapse and / or consolidation , with a small left pleural effusion . There is atelectasis at the right lung base , with equivocal small effusion . Compared with 1 day earlier , there has been slight interval clearing at the left lung base laterally . Otherwise , I doubt significant interval change .
    OUTPUT:
    
1 . NG tube extends beneath the diaphragm , off the film . 2 . Left lower lobe collapse and / or consolidation . The possibility of a left base pneumonic infiltrate can not be excluded , but the degree of opacification is slightly improved compared 1 day earlier . 3 . Minimal patchy opacity at the right base likely represents atelectasis and is similar to 1 day earlier .