Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable single frontal chest radiograph was obtained . The NG tube and right IJ has been removed . A right PICC line terminates in the low SVC . The left pleural effusion is slightly improved . Bibasilar opacities are likely secondary to layering pleural effusions and atelectasis , though pneumonia is certainly possible . The cardiac silhouette remains moderately enlarged with moderate - to - severe pulmonary edema . There is no pneumothorax .
    OUTPUT:
    
1 . Unchanged moderate cardiomegaly with moderate - to - severe pulmonary edema . 2 . Bibasilar opacities likely secondary to bilateral layering pleural effusions and atelectasis . However , a supervening pneumonia can not be excluded .