Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . The patient is status post median sternotomy . Several sternal wires are fractured including the superior to inferior rows as well as the second inferior more wire . There is increased reticulonodular opacity at the lung bases bilaterally , which could be due to aspiration or possibly infection . Dedicated PA and lateral views would be helpful for further evaluation . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Subtle reticulonodular increase in opacity at the lung bases bilaterally , which could be due to aspiration or infection . Dedicated PA and lateral views may be helpful for further evaluation . Possible also focal patchy opacity at the lateral left upper lobe , which could also be related to infection .