Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well inflated and clear . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . There is apparent leftward deviation of the trachea which is likely rotational . Limited evaluation of the osseous structures are notable for mild retrolisthesis of T11 on T12 , unchanged from ___ CT .
    OUTPUT:
    
1 . No acute cardiopulmonary process . Specifically no pneumonia . 2 . Apparent leftward deviation of trachea is likely rotational .