Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . In the interval since the prior study , there has been development of prominence of the central pulmonary vasculature . The perihilar opacity is worrisome for fluid overload , less likely infection . No large pleural effusion is seen . There is no pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Prominence of the central pulmonary vasculature suggests vascular congestion , less likely infection .