Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are within normal limits . The pulmonary vascularity is normal . Hyperinflation of the lungs is unchanged . Linear opacity within the left lung base likely reflects subsegmental atelectasis . No focal consolidation or pneumothorax is present . No pleural effusion is clearly noted , with minimal blunting of the left costophrenic angle on the lateral view possibly attributable to minimal pleural fat as seen on the recent CT . Mild loss of height of a lower thoracic vertebral body is unchanged . There are no acute osseous abnormalities . No free air is demonstrated under the diaphragms .
    OUTPUT:
    
No acute cardiopulmonary process .