Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were performed . The lung volumes are low . The cardiac silhouette is mildly enlarged , with a very large aggregate of calcium in the mitral annulus , but unchanged . The mediastinum is not widened . There is no pleural effusion or pneumothorax . There is no focal airspace consolidation to suggest pneumonia . There is no evidence of pulmonary edema . A focus of scarring is again seen in the left lung base . The imaged upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process .