Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is continued obscuration of the right heart border consistent with right middle lobe atelectasis . ___ in appearance when compared to ___ is likely due to diffence in lung volumes . Biventricular pacer leads are in standard position . Median sternotomy wires are noted . There is no pleural effusion or pneumothorax . The borders of the cardiomediastinal silhouette are not well visualized .
    OUTPUT:
    
Persistent right middle lobe atelectasis , pneumonia is still a possibility .