Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Lungs are clear except for linear atelectasis or scar within the left lung base , unchanged . . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities , and the note is made of separately dictated dedicated right rib series from the same date .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Please see separately dictated rib series for complete evaluation of the ribs .