Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study of ___ . Permanent pacer in left anterior axillary position and dual endovascular electrode system in unchanged position . Moderate cardiac enlargement as before . The pulmonary vasculature shows now a slightly more marked perivascular haze than before , which could be caused by the patient 's overhydration . The existence of a discrete well - defined parenchymal infiltrate in the lower lobe area on the right side ; however , represents a pneumonic process . These findings have progressed since the preceding examination of ___ .
    OUTPUT:
    
Further progression of unquestionable parenchymal infiltrate in right lower lobe posterior area . Telephone call was placed to number ___ for Dr . ___ at 2 :40 p .m .