Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate interval improvement of interstitial edema since ___ . There remains to be mild degree of vascular congestion . Cardiac size is improved since preceding exam accounting for technical differences . Moderate tortuosity of the thoracic aorta is unchanged . Atherosclerotic calcifications are seen in the aortic arch . There is no pneumothorax or large effusion .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . Interval improvement of pulmonary edema , with mild persistent pulmonary vascular congestion .