Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , undo right - sided central line is present , tip over distal most SVC . No pneumothorax is detected . Otherwise , no significant change is detected . The heart is not enlarged . There is no CHF , focal infiltrate , or effusion . There is left convex curvature of the spine --___ scoliosis versus artifact of positioning .
    OUTPUT:
    
No acute pulmonary process identified .