Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Lungs remain clear . There is no effusion , pneumothorax or pulmonary vascular congestion . The cardiomediastinal silhouette is stable , noting a tortuous thoracic aorta . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute cardiopulmonary process .