Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided PICC line is present , tip over distal SVC . Allowing for lordotic positioning . No pneumothorax is detected . There is moderate to moderately severe cardiomegaly , similar to the prior study . There is vascular plethora and vascular blurring , consistent with interstitial edema . Allowing for technical differences , this is not definitely changed . There is worsened retrocardiac density , now with obscuration of the left hemidiaphragm . The possibility of a small left effusion can not be excluded . Again seen is patchy opacity at the right base , consistent with collapse and / or consolidation . A small right effusion is also again noted .
    OUTPUT:
    
1 . CHF , with interstitial edema . Allowing for technical differences , the overall appearance is similar to ___ , possibly very slightly improved . 2 . Worsening opacification at the left lung base , consistent with left lower lobe collapse and / or consolidation and possible small left effusion . 3 . Small right effusion , with atelectasis at the right base . The right base atelectasis is very slightly improved . The possibility of an early infectious infiltrate at the right lung base is considered less likely , but can not be entirely excluded .