Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes . There is no focal consolidation . Small pleural effusions are present . There is mild interstitial pulmonary edema . Hilar and mediastinal silhouettes are unchanged . Heart size is top normal . No pneumothorax . Biapical thickening is again noted .
    OUTPUT:
    
Small bilateral pleural effusions and mild interstitial pulmonary edema , progressed since ___ exam .