Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires , prosthetic valve , and mediastinal clips are again noted . There is improved aeration in the lung bases with resolution of previously noted opacities and effusion . Cardiomediastinal silhouette appears stable and normal . No signs of edema or congestion . Bony structures appear intact .
    OUTPUT:
    
No acute findings .