Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate intact sternal wires . There has been interval placement of a left chest wall pacer device with leads overlying the bilateral atria and the right ventricle . There is also a valve prosthesis . Lungs are well expanded , without focal consolidation , pleural effusion , or pneumothorax . Unchanged cardiomegaly . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .