Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated and the diaphragms are flattened , consistent with COPD . The cardiomediastinal silhouette is unchanged . The heart is not enlarged . Aorta is calcified . No CHF , focal infiltrate , or effusion is identified . Probable calcification of great vessels accounting for curvilinear calcifications overlying the lung apices , unchanged .
    OUTPUT:
    
COPD . No acute pulmonary process identified .