Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: ET tube tip lies 4 .8 cm above the carina . NG tube tip extends beneath the diaphragm off the film . No pneumothorax is detected . Allowing for technical differences , the cardiomediastinal silhouette is unchanged . There is upper zone redistribution and diffuse vascular blurring , consistent with CHF . This is more pronounced than on the prior study . Allowing for technical differences , the retrocardiac opacity itself is unchanged , but there is some more patchy opacity at the left lung base likely related to this CHF . Right cardiophrenic opacity appears slightly improved . Partially imaged cervical thoracic spine fixation hardware is noted , not fully evaluated .
    OUTPUT:
    
Worsening CHF . Patchy opacity at the left lung base laterally is more pronounced , but could relate to CHF . Retrocardiac opacity itself is unchanged . Slight interval improvement in patchy opacity in right cardiophrenic region .