Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes and bibasilar opacities . Prominence of the cardiomediastinal silhouette likely relates to low lung volumes . There is no pleural effusion or pneumothorax . There is no evidence of tuberculosis .
    OUTPUT:
    
Bibasilar opacities in the setting of low lung volumes could represent atelectasis , but multifocal infection is also a possibility .