Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is at the upper limits of normal size . The aorta is mild to moderately tortuous , as before , with calcification along the arch . There is new haziness of pulmonary vascularity suggesting mild vascular congestion , although diffuse inflammation could also be considered . In addition a focal right perihilar opacification has developed , worrisome for pneumonia . Less likely , a relatively focal appearance of pulmonary edema could be considered . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Although there is new diffuse mild haziness of pulmonary vascularity , suggestive of slight congestion or fluid overload , or perhaps a diffuse inflammatory process , a focal right perihilar opacity is most suggestive of pneumonia .