Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two portable frontal radiographs of the chest were acquired . Lung volumes are slightly low . There is central pulmonary vascular congestion with increased widespread interstitial opacities and Kerley B lines , consistent with moderate interstitial pulmonary edema . Moderate bilateral pleural effusions have markedly increased compared to the prior study from ___ . There is no pneumothorax . The heart size is difficult to assess , but appears mildly enlarged , not significantly changed . The mediastinal contours are normal .
    OUTPUT:
    
Findings most consistent with moderate interstitial pulmonary edema and increased moderate bilateral pleural effusions . While thought less likely , infection at either lung base is certainly possible .