Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest was obtained . Indistinct appearance of the pulmonary vascular markings is consistent with mild pulmonary edema , improved in comparison with ___ . No focal consolidation , substantial pleural effusion , or pneumothorax . Top normal heart size is stable . Aortic knob calcifications are re - demonstrated .
    OUTPUT:
    
Mild pulmonary edema , improved in comparison with ___ radiograph .