Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An ICD generator overlies the left chest wall . The single - lead is intact with the tip projecting over the expected position of the right ventricle . Median sternotomy wires appear intact on the single frontal view . There is increased opacification of the medial right lung base , which could reflect early developing pneumonia and / or focal congestion . There is no overt interstitial edema . No pneumothorax is identified .
    OUTPUT:
    
Subtle opacity in the medial right lung base may be due to early pneumonia and / or congestion .