Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The patient is rotated . Mild lower lobe atelectasis is seen . Otherwise , the lungs are clear without focal consolidation , pleural effusion or pneumothorax . The cardiac and mediastinal contours are normal . No displaced fracture is seen .
    OUTPUT:
    
No acute intrathoracic process .