Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are clear without focal opacity , pleural effusion or pneumothorax . The heart size is normal . The mediastinal and hilar contours are normal . There is no free air beneath the hemidiaphragms . No acute osseous abnormality .
    OUTPUT:
    
No acute cardiopulmonary process .