Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . 2 - mm right upper lobe nodule described on previous PET - CT can not be seen on this chest x-ray . Mediastinal and cardiac contours are normal . There is no pleural effusion or pneumothorax . Patient has a coronary stent .
    OUTPUT:
    
There is no sign of intrathoracic malignancy .