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 . There is no pneumothorax , vascular congestion , or pleural effusion . Mild left convex scoliosis and mild thoracic spine djd noted .
    OUTPUT:
    
No acute pulmonary process .