Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The sternotomy wires and a mitral valve prosthesis are constant . There is no pleural effusion , pneumothorax or focal airspace consolidation . Moderate cardiomegaly is unchanged . There is no evidence for pulmonary edema . The mediastinal and hilar contours are stable .
    OUTPUT:
    
No acute cardiopulmonary process .