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 prosthetic valve are unchanged . Cardiomegaly is again noted with mild pulmonary interstitial edema . No large effusion or pneumothorax is seen . Mediastinal contour is stable . Bony structures are intact .
    OUTPUT:
    
Cardiomegaly again noted with mild interstitial edema .