Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is similar compared to the prior study . The aorta remains unfolded . Mild pulmonary edema is slightly worse in the interval with perihilar haziness and vascular indistinctness . No sizable pleural effusion is demonstrated . There is no focal consolidation or pneumothorax . Cervical spinal fusion hardware is incompletely imaged .
    OUTPUT:
    
Mild pulmonary edema .