Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph was provided . A left IJ central venous catheter is seen with its tip extending to the level of the low SVC . Lung volumes are low . The heart is mildly enlarged . There are likely bilateral small effusions . There may be mild pulmonary edema . No pneumothorax . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly , small bilateral effusions , probable mild pulmonary edema .