Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Midline sternotomy wires and thoracic spinal fusion hardware is again noted . Under penetrated technique somewhat limits evaluation . Allowing for this , there is congestion at the hila with mild edema . No large effusion or pneumothorax . Heart size difficult to assess given underpenetration . Mediastinal contour is stable . Bony structures appear relatively intact .
    OUTPUT:
    
Congestion and mild edema . Limited exam .