Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low , exaggerating interstitial opacities and heart size . Heart size is enlarged , unchanged from prior . Interstitial opacities , which may be atelectasis as well as edema , is not significantly worsened . However , underlying pneumonia can not be excluded . Small bilateral effusion is likely . There is no evidence for pulmonary consolidation or pneumothorax .
    OUTPUT:
    
No significant interval change .