Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Peribronchial cuffing , cephalization of the pulmonary vascular and interstitial edema are new since ___ . Small bilateral pleural effusions are also new . The mediastinum is mildly widened and the heart size is mildly enlarged .
    OUTPUT:
    
Interval development of interstitial edema and small pleural effusions .