Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The aorta is tortuous . The pulmonary vascularity is normal . Linear opacity in the lingula is compatible with subsegmental atelectasis . Remainder of the lungs are clear . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is seen .
    OUTPUT:
    
No radiographic evidence for intrathoracic metastatic disease .