Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . Midline sternotomy wires and mediastinal clips are again noted . There is improved aeration in the lower lungs as compared with recent prior exam . Minimal opacity persists in the right lower lung which could represent atelectasis though the possibility of pneumonia is impossible to exclude . No large effusion or pneumothorax . The cardiomediastinal silhouette is stable . The imaged osseous structures are intact .
    OUTPUT:
    
Near complete resolution of lower lung opacities suggest interval improvement though residual atelectasis / pneumonia is impossible to exclude . Continued followup is advised .