Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single upright portable AP chest radiograph demonstrates a patchy consolidations within the lung bases bilaterally , right greater than left , newly apparent relative to prior examination performed ___ . Blunting of bilateral costophrenic angles may reflect small pleural effusions . Cardiomediastinal and hilar contours are within normal limits . Bibasilar atelectasis is moderate . Imaged osseous structures are without an acute abnormality . Upper abdomen is unremarkable .
    OUTPUT:
    
Bibasilar patchy consolidations new relative to prior examination performed ___ possibly atelectasis although infectious etiology can not be excluded .