Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for technical differences , there may have been slight improvement in CHF findings . Otherwise , doubt significant interval change . ET tube tip lies 4 .6 cm above the carina . NG tube tip extends beneath diaphragm overlying the upper stomach . The sideport lies in the region of the GE junction , probably slightly distal to it . There is mild cardiomegaly . There is upper zone redistribution and diffuse vascular blurring , consistent with CHF , with possible slight interval improvement . Retrocardiac opacities improved , though remains faintly present , with suggestion of air bronchograms , consistent with left lower lobe collapse and / or consolidation . No gross effusion . No pneumothorax detected . Fixation hardware of the lower cervical and upper thoracic spine again noted .
    OUTPUT:
    
CHF , possibly very slightly improved compared with 1 day earlier . Residual left lower lobe collapse and / or consolidation , though with interval improvement . NG tube tip over upper stomach . The sideport lies near the GE junction , probably slightly distal to it .