Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . The mediastinal and hilar contours appear within normal limits . There is new perihilar fullness with indistinct pulmonary vascularity and an interstitial abnormality , including ___ B lines at the lung bases , most consistent with mild to moderate pulmonary vascular congestion . No discrete focal opacity is otherwise identified .
    OUTPUT:
    
Findings suggesting vascular congestion .