Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right internal jugular venous introducer terminates in upper SVC . Through the introducer , a temporary pacer wire is placed with its tip terminating in right ventricle . Left lung base opacity is similar as before , likely due to lung base atelectasis and small pleural effusion . Mild pulmonary edema is stable . Known bilateral lung masses were better evaluated on prior CT . Increased right basilar opacity may be secondary to difference in layering of small right pleural effusion .
    OUTPUT:
    
Pacer wire is in unchanged position . No notable interval change .