Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiographs were obtained . The lungs are well expanded . Bilateral pulmonary scarring , particularly at the lung bases , is unchanged . There is no focal consolidation , effusion , or pneumothorax . Moderate cardiomegaly is unchanged . There are no new abnormal cardiac or mediastinal contour .
    OUTPUT:
    
No acute cardiopulmonary process .