Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prior right - sided central venous catheter is no longer visualized . On the lateral view there is increased density projecting over the lower thoracic spine new since prior . This could represent region of atelectasis although developing infection is also possible . Elsewhere , the lungs are clear without consolidation . There is pulmonary vascular congestion without overt edema . Linear midlung opacities bilaterally are most suggestive of atelectasis . Cardiomediastinal silhouette is stable . Median sternotomy wires are again noted .
    OUTPUT:
    
Pulmonary vascular congestion without overt edema . Opacity on the lateral view overlying the lower thoracic spine could be due to atelectasis although developing infection is not excluded .