Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is mildly tortuous but unchanged . The mediastinal and hilar contours are stable . There are minimal linear opacities in the left lung base compatible with subsegmental atelectasis . No focal consolidation , pleural effusion or pneumothorax is identified . No acute osseous abnormalities are seen . Dextroscoliosis of the thoracic spine is again noted .
    OUTPUT:
    
Subsegmental left basilar atelectasis . Otherwise no acute cardiopulmonary process .