Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Bilateral pulmonary opacities as well as hilar fullness are seen which could represent moderate pulmonary edema , particularly since chest radiograph in ___ showed mild cardiomegaly and upper lobe pulmonary vascular engorgement , signs of cardiac decompensation , however infection should be considered in the appropriate setting . There may be small bilateral pleural effusions . No pneumothorax . The heart is top - normal in size and the aorta is tortuous .
    OUTPUT:
    
Moderate , basal predominant pulmonary edema most likely , although viral infection can give similar findings .