Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Transvenous atrial biventricular pacer defibrillator leads with left pectoral generator are unchanged . Right IJ central line with tip over the upper right atrium is unchanged . Right - sided chest tube is new . No pneumothorax is detected . The patient is status post sternotomy , with a large cardiomediastinal silhouette , similar to the prior film . Again seen is opacification at the right base which likely represents a combination of a right effusion and underlying collapse and / or consolidation . The right pleural effusion may be very slightly smaller . Faint blurring in the upper zones bilaterally likely reflects CHF , also similar to the prior study . Equivocal area of more confluent density in the upper right lung laterally , though I suspect that this is artifact due to overlying iatrogenic device . There is atelectasis in the retro cardio region , similar prior . No gross left effusion .
    OUTPUT:
    
Interval placement of right chest tube . Opacification at the right base a is overall similar , with possible slight decrease in the size of the right pleural effusion . No pneumothorax detected . Probable CHF and left base atelectasis . Ill - defined confluent opacity in the right upper chest laterally most likely represents artifact due to overlying materials . Attention to this area on followup films is requested .