Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Pulmonary vascular engorgement is accompanied by minimal peribronchial cuffing and slight vascular indistinctness . Linear areas of atelectasis are present at both lung bases , but there are no confluent areas of consolidation . Small pleural effusions are also demonstrated . Increased volumes of the lungs suggest the possibility of underlying COPD .
    OUTPUT:
    
Mild interstitial edema and small bilateral pleural effusions .