Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is mildly enlarged and stable from previous studies . The aorta is heavily calcified otherwise the mediastinal silhouette is unremarkable . The hila are normal . The lungs are hyperinflated with flattening of the diaphragms . There is a small left pleural effusion but no evidence of focal consolidations or pulmonary edema .
    OUTPUT:
    
Small left pleural effusion otherwise no acute cardiopulmonary abnormalities .