Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left subclavian line is unchanged and in adequate position ending in the lower portion of the superior vena cava . There is no pneumothorax and no pleural effusion . The mediastinal and cardiac contour are unchanged and normal . There is no pneumonia . The lungs are clear .
    OUTPUT:
    
1 . There is no evidence of pneumonia . 2 . The left subclavian line is in adequate position .