Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are unchanged compared to the prior study . The cardiomediastinal contour is unchanged with persistent mild cardiomegaly . Mild prominence of the pulmonary vasculature is again noted however there is no frank pulmonary edema . No pleural effusions seen . No pneumothorax seen . Left lower lobe streaky opacities appear improved compared to the prior study .
    OUTPUT:
    
Findings consistent with mild congestive heart failure but no frank pulmonary edema is seen .