Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new right internal jugular central venous catheter terminates in the upper superior vena cava . There is no evidence for pneumothorax . The left lung base is better aerated with decrease in the extent of elevation of the left hemidiaphragm and basilar opacification of the left lung . A right basilar opacity is unchanged . Early pneumonia could be considered . There is also some suggestion of upper zone redistribution of pulmonary vascularity . The cardiac , mediastinal and hilar contours appear unchanged .
    OUTPUT:
    
Improved aeration at the left lung base . Persistent right basilar opacity ; pneumonia could be considered . Suspected mild vascular congestion .