Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi upright frontal view of the chest . Cephalization of the pulmonary vasculature with no overt pulmonary edema appears relatively unchanged compared to the prior chest radiograph . Bilateral lower lobes opacity likely represent atelectasis and due to overlying soft tissues . There is no pleural effusion or pneumothorax . No osseous abnormality is seen .
    OUTPUT:
    
No pleural effusions . Mild pulmonary vascular congestion .