Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left central line has been removed in the interim . Mild pulmonary edema is unchanged . Retrocardiac opacity , likely atelectasis , is slightly worse from ___ but could be explained by slightly lower lung volumes . Small nodular opacities in the right upper lung are likely sequela from pneumonia . No pneumothorax or pleural effusion . Heart is borderline enlarged but unchanged from ___ .
    OUTPUT:
    
Slightly lower lung volumes . Mild pulmonary edema unchanged from 2 days prior .