Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest was obtained . Lung volumes are low . The pulmonary vasculature is prominent and indistinct , compatible with congestion and early edema . The left costophrenic angle appears blunted , compatible with a small effusion . No pulmonary consolidation or pneumothorax . The heart is of normal size with normal cardiomediastinal contours . There is calcification of the aortic knob . No radiopaque foreign body . Osseous structures are unremarkable .
    OUTPUT:
    
Early pulmonary edema with possible small left pleural effusion .