Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart appears mildly enlarged . The aorta is slightly tortuous . Otherwise , the mediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . There is a mild interstitial abnormality and fissural thickening , suggesting mild pulmonary edema . Kerley B lines are noted along lateral costophrenic angles . No focal opacities are visualized , however . Bony structures are unremarkable .
    OUTPUT:
    
Findings suggesting mild congestive heart failure .