Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ at 424 , there has been interval obscuration of the left hemidiaphragm and increased retrocardiac density , consistent with increased left lower lobe collapse and / or consolidation . The presence of a small left effusion would be difficult to exclude . Otherwise , I doubt significant interval change . Again seen is cardiomegaly , with CHF and interstitial edema . ET tube tip approximately 4 .0 cm above the carina . PICC line tip over proximal SVC . No pneumothorax detected .
    OUTPUT:
    
New left lower lobe collapse and / or consolidation . Persistent CHF .