Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is minimal discoid atelectasis in the left lower lobe . Otherwise , the rest of the lung fields are clear . The aorta is tortuous , but the cardiac and mediastinal contours are unremarkable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of acute cadiopulmonay pocess .