Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest show clear lungs with no nodules or focal consolidation to suggest pneumonia . Tortuosity of the upper trachea at the thoracic inlet appears to be related to head positioning . Heart and mediastinal contours are within normal limits in size and shape and no suspicious bone abnormality or fracture is seen . No pneumothorax or pleural fluid is present .
    OUTPUT:
    
No plain film findings to account for cough .