Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are within normal limits . Both lungs appear slightly hyperinflated likely representing chronic obstructive pulmonary disease . Streaky linear atelectasis is also noted within the left lateral lung base . Right costophrenic angle is not included in the field of view .
    OUTPUT:
    
No acute cardiopulmonary process .