Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are unchanged compared to the prior study . The trachea is central . The cardiomediastinal contour is unchanged with mild cardiomegaly . Mild prominence of pulmonary vasculature is noted but no frank pulmonary edema . No consolidation or pneumothorax seen . The visualized bony structures are unremarkable in appearance .
    OUTPUT:
    
Findings consistent with mild congestive heart failure , no overt pulmonary edema appreciated .