Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . There is mild cardiomegaly similar to prior studies . There is no pleural effusion or pneumothorax . Right chest wall pacemaker has a single lead in the right ventricle . Median sternotomy wires appear intact . There is a prosthetic mitral valve in place . There is no pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary abnormality .