Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . The lungs are clear . Specifically , there is no ___'s ___ ___ sign as queried . There is no pneumothorax , vascular congestion , ___ pleural effusion .
    OUTPUT:
    
No acute cardiopulmonary process .