Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear with the exception of a opacity in the left hemithorax , correlating to a partially calcified scar on the CT from ___ . Cardiomediastinal silhouette and hilar contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cardiopulmonary process .