Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: IN COMPARISON WITH THE STUDY OF ___ , THE RIGHT SUBCLAVIAN CATHETER HAS BEEN REMOVED AND REPLACED WITH A PORT - A - CATH , WHICH EXTENDS TO THE LOWER PORTION OF THE SVC . THE CARDIAC SILHOUETTE REMAINS AT THE UPPER LIMITS OF NORMAL OR SLIGHTLY ENLARGED . THERE ARE SOME KERLEY LINES AT THE BASES , CONSISTENT WITH ELEVATED PULMONARY VENOUS PRESSURE . THERE IS INCREASED OPACIFICATION AT THE LEFT BASE POSTERIORLY , CONCERNING FOR LOWER LOBE PNEUMONIA .
    OUTPUT:
    
INCREASED LEFT BASILAR OPACIFICATION CONCERNING FOR PNEUMONIA . WELL - POSITIONED PORT -A-CATH .