Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the ___ chest radiograph , the heart has slightly increased in size and is accompanied by pulmonary vascular congestion and diffuse interstitial edema . There is no definite pneumonia , but followup PA and lateral chest radiographs after diuresis may be helpful to a more fully exclude this possibility , particularly at the right lung base . Lung volumes are increased , suggestive of COPD . Small bilateral pleural effusions are also demonstrated .
    OUTPUT:
    
1 . CHF with interstitial edema and small bilateral pleural effusions . 2 . Followup PA and lateral radiographs after diuresis may be helpful to exclude the possibility of coexisting pneumonia in the right lung base .