Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to previous chest radiographs , the mild vascular congestion has improved . No consolidation or pleural effusion is seen . The cardiac contours are mildly enlarged , and the ET tube ends in appropriate position . The left IJ sheath and a right IJ central line end in the mid to lower SVC and are unchanged in position .
    OUTPUT:
    
Improvement of pulmonary vascular congestion .