Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low , causing exaggeration of the heart size and accentuation of the pulmonary vasculature . Diffuse bilateral interstitial opacities are consistent with mild pulmonary edema . The heart is mildly enlarged , as before . The descending thoracic aorta is slightly tortuous , unchanged . There is a right tunneled IJ catheter ending in the right atrium . No pleural effusions . No pneumothorax . Stable mid-thoracic compression fracture .
    OUTPUT:
    
1 . Mild interstitial pulmonary edema . 2 . Unchanged mild cardiomegaly .