Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen is cardiomegaly , with a left - sided single lead pacemaker , not significantly changed . Upper zone redistribution and mild vascular plethora is also again seen . There is as before , there is , increased retrocardiac opacity , consistent with left lower lobe collapse and / or consolidation . Compared with ___ , however , there has been some interval obscuration of left hemidiaphragm and of the left costophrenic angle suggesting interval progression of left lower lobe collapse and / or consolidation . A small left effusion can not be entirely excluded . Minimal patchy opacity at the right lung base , possibly atelectasis , is not significantly changed . No gross right effusion .
    OUTPUT:
    
Interval worsening of left lower lobe collapse and / or consolidation . The left hemidiaphragm and left costophrenic angle are now obscured .