Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are normally expanded and clear . Heart size is top normal . The mediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . The visualized osseous structures are grossly intact . No known fracture of the transverse process of T1 on the left is not well appreciated on this study .
    OUTPUT:
    
No evidence of acute traumatic injury . However , known fracture of the left transverse process of T1 is not appreciated on this study .