Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiographs on ___ , multifocal opacities at the bilateral lung bases persist , which could reflect developing pneumonia or aspiration . Lung volumes remain somewhat low . No new focal airspace consolidation . There is mild central vascular congestion without overt pulmonary edema . No appreciable pleural effusions . No pneumothorax . Cardiomediastinal silhouette is stable .
    OUTPUT:
    
1 . Unchanged multifocal bibasilar opacities , which could reflect pneumonia or aspiration . No new focal consolidations . 2 . Persistent mild central vascular congestion without overt pulmonary edema .