Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and pacer as well as the leads appear unchanged . Marked cardiomegaly is again noted with no focal consolidation , effusion or pneumothorax . There is mild left basal atelectasis . No convincing signs of edema or hilar congestion . Bony structures are intact .
    OUTPUT:
    
Marked cardiomegaly unchanged with mild left basal atelectasis .