Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , which accentuate bronchovascular markings . Bibasilar opacities likely represent atelectasis . Hilar and mediastinal silhouettes are unchanged . Heart size is top normal . No pleural effusion , focal consolidation or pneumothorax .
    OUTPUT:
    
Low lung volumes with bibasilar opacities , likely atelectasis . Otherwise , no acute cardiopulmonary process .