Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . Despite slightly low lung volumes , the lungs are clear . There is no pneumothorax , vascular congestion , or pleural effusion . Mild anterior loss of height in one of the mid thoracic vertebrae appears stable since prior exam .
    OUTPUT:
    
No radiographic evidence of acute cardiopulmonary process .