Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate median sternotomy wires , aortic valve replacement , and mitral annular calcifications , all unchanged . Moderate hiatal hernia is stable . There is no focal consolidation , pulmonary vascular congestion , pleural effusion , or pneumothorax . Mild cardiomegaly is stable .
    OUTPUT:
    
No acute cardiopulmonary process . Attempt was made to telephone these results to Dr . ___ at the number provided .